Facebook

Again what happens when you sign out of the app, and then sign in with your credentials.

If you're still having issues after that then contact Facebook or look at their support site, Facebook isn't an Apple app.

Maxwellheugh wrote:

When I open my Facebook Account through Google it opens my Account, of course, but when I touch the Facebook App on screen it opens my Wife’s Account !

Yes, you're logged into your wife's account. You need to log out.

Tap the three parallel lines in the bottom right of the Facebook app screen. Scroll all the way to the bottom. Tap "Log Out".

What happens when you sign out of the app and sign in with your credentials?

You log out of the app.

Again ask facebook.

Glad it helped.