My Dad's great grandfather fought in the Civil War, and my Dad just died at 92.
My Dad had a picture of himself and my uncle and their great grandfather marching in a Civil War 60th Anniversary parade in Chicago in 1925.
My great-grandfather was 42 when he married for the first time and 49 when my grandfather was born. My grandfather was in his thirties when my father was born and my father was in his thirties when I was born.
My great-great-grandfather lived to 64, my great-grandfather to 85, my grandfather to 93, and my father to 94. I like the direction the numbers are going.
On my mother's side, I had two great-great-grandfathers who were in the Civil War. I have a photo of one of them, who lived to 1904. That man's great-grandfather fought in the Revolutionary War. On my direct paternal line the ancestor who was old enough to fight in the Revolutionary War (but lived in Europe) was two generations closer to me.
My condolences on the loss of your father.