Katherine

Nicknames for Katherine:
Rin
Kat
Kate
Katie
Kathy.

In 2018, 20 is the most common age for an American (U.S.) Katherine who is registered female with the Social Security Administration. It is the 92nd most common female first name for living U.S. citizens.

In the late 1800s this was also used as a boy's name.

I'm from Britain and most people I know spell it "Catherine".

The usage of this name is not common in my area, although is not rare. My nicknames used are Katja, Kaia, Kate, and Kaj. Mostly Katja :D
I most like to be called by my pet name, Violet.