['My father in law was diagnosed with pancreatic cancer when our daughter was 9 months old.  She was his first granddaughter.']
Oh, I'm so sorry to hear that! I know how hard that can be for the family as well. Is he able to get treatments?
My father in law was diagnosed with pancreatic cancer when our daughter was 9 months old.  He passed 9 months later when she was 18 months.