Dianne_M2 on Family Tree Circles

I am searching for information regarding my paternal grandfather, JOHN FRANCIS MACNULTY, who married my paternal grandmother, GEORGIANNA. JOHN was GEORGIANNA'S second husband. I suspect that she was JOHN'S second wife. My grandmother's maiden surname was DAVID. The surname of her first husband was ROLLINS. I have only a few bits of information about my grandfather. I am still looking for the date and details of his death. As a child, I was told that he died before I was born -- and I was given no further information. I would appreciate any and all help sorting through this.