Great Great Grandfather!? You’re a fortunate man to have been able to spend time with him.
My Dad’s dad passed away in 1953, 11 years before l was born and my Great Grandfather passed away in 1923, he was born in 1852. My GGGF would’ve been born in the 1820’s or 30’s. If he was still alive when l was born he would’ve been in his 130’s or so.
He lived and died in Sweden.