Saved Password

Hoping someone might be able to help with this

I logged into my local library on iPad Air and with Passwords Autofill on,it remembers the password when I go to log on again.However I want to delete that password and get the iPad to remember my wife's instead.So went to 'saved passwords' in Settings.'Edit' button on top tapped,iPad password asked for and accepted and the details show up.However how do I delete those details?Hopefully if that is done and my wife logs on to the library website,it will then remember her details?Thank you in advance

I don't know if it will help, but maybe have a look here, especially if iCloud and iOS 7.x is being used:

How to access and view your iCloud Keychain passwords with iOS 7 | iMore

How to delete saved passwords from iCloud Keychain in iOS 7 | iMore

What I do know is that iOS is not really happy with multi-user use and multiple user password settings with my small experience.

Our solution was to purchase another iPad for her use alone. She loves it.

Thanks pm-r.No,we didn't use iCloud but am learning the hard way about the lack of encouragement shall we say for multiple accounts.That's why I am getting the few little things I did on it,off.Thanks again