Although there is no history of ovarian cancer in my family that I know of, and no cancer on my mother's side at all, my father died of sinus cancer when he was 45. His older brother died of kidney
cancer (he was in
his early 60s), his middle brother of lung cancer (at 86), and his sister of breast cancer at age 52. Their father, my grandfather, died of colon cancer at age 77. So there's lots of cancer there.