Kassia
My favorite name is Kassia. (KOSH-ah) Kassia is the Polish version of Kate which means "pure." My sister is named Kassia after a great-great-Aunt, and she has always been proud to reflect our Polish heritage. Her full name is Kassia Briana. Kassia Briana means pure & strong. I think that the names sound wonderful together, and their joint meaning is wonderful as well. There is also a cool historical figure named Kassia. Kassia was a Byzantine abbess and composer of liturgical chants and hymns. She is the only female poet with extant work from Byzantine Greek era.