Why does my Google account show my same phone 4 or 5 times as a different device that has access to my account and won't let me delete them

Deleting your Google Account affects all data associated with that account and any services you use, like Gmail, Google Play, or YouTube.
You can delete your Google Account at any time, but you may not be able to restore it. You can also remove your account from a Pixel phone, Nexus device, or other Android devices without deleting your account.
Step 1: What happens when you delete your account
Once you delete your Google Account, you'll no longer be able to use the following:
Services you have to sign in to, like Gmail, Drive, and Calendar.
Data associated with your account, including emails, photos, and records of transactions.
Subscriptions and content you purchased on YouTube, like movies and TV shows.
Content you bought on Google Play, like apps, movies, games, or music.
Information you saved in Chrome.
Your Gmail username. After you delete your username, it can't be used again by you or anyone else.
If you use an Android device
If you use a Chromebook
Step 2: Update and download your info
When you delete your account, you won't have access to your data. Before deleting your account:
Review the info associated with your account on the Google Dashboard.
Update your info for services that use your Gmail address during sign in.
Update your password recovery info.
Learn how to download your data.
Step 3: Delete your Google Account
Sign in to "My Account". If you forgot your password, you can reset it.
Under "Account preferences," select Delete your account or services.
Choose a service to delete or select Delete Google Account and data.
Review what you're deleting and follow the instructions.
Choose Delete. If you accidentally deleted your account, learn how to restore your account.
If you can't follow these steps, your account might have been created by your organization or company. For help, contact your admin.

Could be a filter directing virtually all mail to another folder. While I would be tempted to say a google algorithm is deciding where to put your mail, another filter may be in place. Alternatively, here is something about Outlook mail leaving an empty folder: http://www.fixkb.com/2013/04/outlook-not-showing-emails-we-didnt-find-anything-to-show-here-but-the-folder-states-there-are-unread-emails.html

Look in Settings->Filters and Settings->Forwarding. Is there anything defined?
Do you access your account with an e-mail client (Outlook, Thunderbird, Pocomail, etc), phone, notifier, or any other add-on/tool/web-site/etc? Is anything enabled in Settings->POP/IMAP?
Check Settings -> Accounts -> Change Account Settings -> Other Google account settings -> Security -> Account Permissions. Have you given account access to any other web-sites or utilities?
Also, check the Details link below the Inbox (lower/right). What are all the types of account access listed there? (Quoted from Google groups.)

Access Gmail using a different browser, and send a few test messages. Where are they showing up?

Consider when this problem cropped up. Did you use a different device like a phone where some new app was applied to your mail?

I hope this helps.

Typically when a mobile device is locked, it wants the original e-mail account name and password it was setup with. You shouldn't need internet connectivity to unlock the phone. If you can log into your account at https://mail.google.com/ that's good, but it doesn't guarantee it's the same account the device is using or the original password used.
In some cases, if the device can receive a call, you can access the menu during the call and disable the screen lock.
If you don't remember the username and the account was properly setup at creation time, you can recover the name using "I forgot my username" here: http://support.google.com/mail/bin/answer.py?hl=en&answer=46346 And here's a trick to recover an account name on an Android device: https://productforums.google.com/d/topic/gmail/ydNElvUjJVU/discussion
If you have the username, the following will help with the process to recover the account by resetting the password: http://gmailaccountrecovery.blogspot.com/
BUT... A recovered account or changed password won't have the original password which is what the device needs to be unlocked. In that case the device will probably need to have a factory reset done (read the owner's manual for instructions) and then setup again with an e-mail account (be sure to write the information down this time). If it's setup with the recovered e-mail account, any purchased apps and synced data should be restored. If a new account needs to be created, all previous information will be lost.
An article on this topic: http://einartysen.se/unlock-android-phone-after-too-many-pattern-attempts/

Typically when a mobile device is locked, it wants the original e-mail account name and password it was setup with. You shouldn't need internet connectivity to unlock the phone. If you can log into your account at https://mail.google.com/ that's good, but it doesn't guarantee it's the same account the device is using or the original password used.
In some cases, if the device can receive a call, you can access the menu during the call and disable the screen lock.
If you don't remember the username and the account was properly setup at creation time, you can recover the name using "I forgot my username" here: http://support.google.com/mail/bin/answer.py?hl=en&answer=46346 And here's a trick to recover an account name on an Android device: https://productforums.google.com/d/topic/gmail/ydNElvUjJVU/discussion
If you have the username, the following will help with the process to recover the account by resetting the password: http://gmailaccountrecovery.blogspot.com/
BUT... A recovered account or changed password won't have the original password which is what the device needs to be unlocked. In that case the device will probably need to have a factory reset done (read the owner's manual for instructions) and then setup again with an e-mail account (be sure to write the information down this time). If it's setup with the recovered e-mail account, any purchased apps and synced data should be restored. If a new account needs to be created, all previous information will be lost.
An article on this topic: http://einartysen.se/unlock-android-phone-after-too-many-pattern-attempts/

Typically when a mobile device is locked, it wants the original e-mail account name and password it was setup with. You shouldn't need internet connectivity to unlock the phone. If you can log into your account at https://mail.google.com/ that's good, but it doesn't guarantee it's the same account the device is using or the original password used.
In some cases, if the device can receive a call, you can access the menu during the call and disable the screen lock.
If you don't remember the username and the account was properly setup at creation time, you can recover the name using "I forgot my username" here: http://support.google.com/mail/bin/answer.py?hl=en&answer=46346 And here's a trick to recover an account name on an Android device: https://productforums.google.com/d/topic/gmail/ydNElvUjJVU/discussion
If you have the username, the following will help with the process to recover the account by resetting the password: http://gmailaccountrecovery.blogspot.com/
BUT... A recovered account or changed password won't have the original password which is what the device needs to be unlocked. In that case the device will probably need to have a factory reset done (read the owner's manual for instructions) and then setup again with an e-mail account (be sure to write the information down this time). If it's setup with the recovered e-mail account, any purchased apps and synced data should be restored. If a new account needs to be created, all previous information will be lost.
An article on this topic: http://einartysen.se/unlock-android-phone-after-too-many-pattern-attempts/

Typically when a mobile device is locked, it wants the original e-mail account name and password it was setup with. You shouldn't need internet connectivity to unlock the phone. If you can log into your account at https://mail.google.com/ that's good, but it doesn't guarantee it's the same account the device is using or the original password used.
In some cases, if the device can receive a call, you can access the menu during the call and disable the screen lock.
If you don't remember the username and the account was properly setup at creation time, you can recover the name using "I forgot my username" here: http://support.google.com/mail/bin/answer.py?hl=en&answer=46346 And here's a trick to recover an account name on an Android device: https://productforums.google.com/d/topic/gmail/ydNElvUjJVU/discussion
If you have the username, the following will help with the process to recover the account by resetting the password: http://gmailaccountrecovery.blogspot.com/
BUT... A recovered account or changed password won't have the original password which is what the device needs to be unlocked. In that case the device will probably need to have a factory reset done (read the owner's manual for instructions) and then setup again with an e-mail account (be sure to write the information down this time). If it's setup with the recovered e-mail account, any purchased apps and synced data should be restored. If a new account needs to be created, all previous information will be lost.
An article on this topic: http://einartysen.se/unlock-android-phone-after-too-many-pattern-attempts/

Typically when a mobile device is locked, it wants the original e-mail account name and password it was setup with. You shouldn't need internet connectivity to unlock the phone. If you can log into your account at https://mail.google.com/ that's good, but it doesn't guarantee it's the same account the device is using or the original password used.
In some cases, if the device can receive a call, you can access the menu during the call and disable the screen lock.
If you don't remember the username and the account was properly setup at creation time, you can recover the name using "I forgot my username" here: http://support.google.com/mail/bin/answer.py?hl=en&answer=46346 And here's a trick to recover an account name on an Android device: https://productforums.google.com/d/topic/gmail/ydNElvUjJVU/discussion
If you have the username, the following will help with the process to recover the account by resetting the password: http://gmailaccountrecovery.blogspot.com/
BUT... A recovered account or changed password won't have the original password which is what the device needs to be unlocked. In that case the device will probably need to have a factory reset done (read the owner's manual for instructions) and then setup again with an e-mail account (be sure to write the information down this time). If it's setup with the recovered e-mail account, any purchased apps and synced data should be restored. If a new account needs to be created, all previous information will be lost.
An article on this topic: http://einartysen.se/unlock-android-phone-after-too-many-pattern-attempts/

Typically when a mobile device is locked, it wants the original e-mail account name and password it was setup with. You shouldn't need internet connectivity to unlock the phone. If you can log into your account at https://mail.google.com/ that's good, but it doesn't guarantee it's the same account the device is using or the original password used. In some cases, if the device can receive a call, you can access the menu during the call and disable the screen lock. If you don't remember the username and the account was properly setup at creation time, you can recover the name using "I forgot my username" here: http://support.google.com/mail/bin/answer.py?hl=en&answer=46346 And here's a trick to recover an account name on an Android device: https://productforums.google.com/d/topic/gmail/ydNElvUjJVU/discussion If you have the username, the following will help with the process to recover the account by resetting the password: http://gmailaccountrecovery.blogspot.com/ BUT... A recovered account or changed password won't have the original password which is what the device needs to be unlocked. In that case the device will probably need to have a factory reset done (read the owner's manual for instructions) and then setup again with an e-mail account (be sure to write the information down this time). If it's setup with the recovered e-mail account, any purchased apps and synced data should be restored. If a new account needs to be created, all previous information will be lost. An article on this topic: http://einartysen.se/unlock-android-phone-after-too-many-pattern-attempts/

Have a look here:
http://www.galaxys4forums.net/forum/4-new-member-introduction-site-assistance/1457-solved-error-491-cannot-download-update-nothing-google-play.html

Grts,
Bart

To delete one Google Account off your phone, follow these steps:
- Go to Settings (you can do this by tapping the Settings icon in your App Drawer, or by pressing the menu key on your home screen and tapping Settings)
- Tap "Accounts & sync"
- Under "Manage Accounts" tap the Google account that you want to remove
- Tap the "Remove Account" button at the bottom of the screen

This will completely remove the account from your device, so you will lose any contacts, e-mails, photos and calendar entries associated with the account. Also, if it is the primary Google Account on the device, you may lose access to paid apps you bought with that account.

If this helped you, help me with a few thumbs up!