Quote Originally Posted by ConfusedMe View Post
....Will the spousal visa issued to me will lose its validity if I have new name in my new passort?
The answer is NO. It will have no impact on validity
The visa validity stands.

You should focus on having a happy wedding day, then making application for FLR
Just be sure to complete all before your fiancee visa expires.

Once you have your 2 year FLR "in your hands" that's the time to consider such things as passport renewal and passport name changes.

Advance happy wedding day