Try this. https://support.mozilla.org/en-US/kb/password-manager-remember-delete-edit-logins#w_managing-usernames-and-passwords

Thanks, but this did not solve my problem. I don't save any logins and I still see various user names pop up when I get to a screen where they are entered. I can't figure out a way to delete incorrect ones and nothing in that article was the answer.

Make sure you use the cursor Down key to select this item in the drop-down list.

Suggestions in a login drop down list that have a key icon in front are login suggestions that you need to remove in the Password Manager.

• https://support.mozilla.org/en-US/kb/password-manager-remember-delete-edit-logins

Suggestions in a drop down list without a key symbol are autocomplete saved form data. Suggestions without a key icon are part of autocomplete saved form data that you should be able to remove by selecting this item with the cursor Down key and pressing Delete (Mac: Shift+Delete).

• https://support.mozilla.org/en-US/kb/control-whether-firefox-automatically-fills-forms

that did it, thanks!