Time was, even C-starting Catherines who called themselves Kate spelled it with a K, but Cate Blanchett changed all. Cate is now as acceptable as (but not as well used as) Kate. Cait might be short for Caitlin.
Catherine "Cate" Blanchett, American actress Catherine "Cate" Edwards, attorney and daughter of former U.S. Senator John Edwards
Cate Marvin, American poet
Cate Tiernan, pen name for American novelist Gabrielle Charbonnet
Cate Shortland, Australian film director and screenwriter
Cate Sweeney, English playwright
Cate NatalieCampbell, Australian Olympic swimmer
Actor Field Cate