My mom and DH tried so hard to get me to name DD Katherine Grace but with my name being Katrina, I didn't want too. Plus it is so common where I live.
Everyone calls me Kat too.. lol.
One of my best girlfriends has this exact name...same spelling...and I've always LOVED it.
We called her Catherine Grace sometimes, even in high school. When shortened she went by Cathy, but I prefer Cat!!
I am very biased but I LOVE it .
My DD is Katherine Grace (nn Kate).