My father in law was diagnosed with pancreatic cancer over 18 years ago now.
Aw, dang, sounds like he is battling it very well though!
No, he did pass away about 9 months after the diagnosis.  I tried to help care for him, but we had to call hospice in eventually.  There are some angels that work for hospice.
Ouch, I'm very sorry for your loss! You did your best, and I'm sure he is in heaven now looking over you!