I had a great-uncle who died in his 30s, on the day after President Harding died. His widow died in 1990, aged 101 (she had married again and been widowed a second time). I don't know what my great-uncle died of. One of his brothers lived to 94.
No, she never remarried and died at 92! Was buried next to her husband 64 years later! She always said she had to much to do, working hard and raising her children.
I noticed I probably confused everybody by saying my Great Aunt’s daughter was my Aunt. It’s just that there was such an age difference we called her Aunt. (we were born 40 years apart!) My family has an interesting dynamic and age range!