Pat is a nickname.
you don't see girls named Patrick or boys named Patricia, for example.
Should Americans stop gender bending?
Sort:
Jul 3, 2018
0
#24
For older Americans, the classic is sportswriter Shirley Povich. Shirley was the father of schlock television host Maury Povich.
What should we do with HER!
DANica PATrick 
Some names go either way such as Pat.