This may seem an odd and morbid question, but I am curious about the use of relative familial titles when the family member you are referring to died prior to your birth.
For example, say my mother has a brother named Bruce. When I am born he becomes my uncle. While we are both alive I would refer to him as Uncle Bruce. Even when he dies, I would continue to refer to him as Uncle Bruce, as in, "Remember the time we went to the beach with Uncle Bruce?" Moreover, I would argue this title stays even after my death. My children might say, "My dad's uncle was a shoe salesman."
But how would I refer to my mother's brother Bruce if he died before I was born? I would think I would refer to him as "my mother's brother." It seems odd to refer to him as my uncle because he was not alive when I was born, therefore he only attained that title posthumously.
And would it make any difference as to when my mother's brother died? Say my mother had a brother who died when he was an infant. Would he still be referred to as "my uncle?"
Best Answer
I would ask whether you would have any issue referring to, say, your mother's grandfather as your great-grandfather, even though he may have died some years before you were born. Your mother's brother is certainly your uncle, and in my opinion it's correct to refer to him as such even if you never met him.
Your reluctance to use the word "uncle" in this case may be because it is common to think of our uncle (or aunt) as a relative perhaps second only to our parents in closeness and affection. Consider the word "avuncular" which means literally "pertaining to an uncle" but has a secondary meaning of "kind, genial, benevolent". Having never met your mother's brother Bruce you might not feel comfortable referring to him as Uncle for this reason.
The issue you raise of an uncle who died in infancy is an interesting one. Again it's probably because we typically know our uncles as men of our father's age that this seems odd. If you're a "Seinfeld" fan you may remember a scene in which George is talking to his mother, who mentions "Aunt Baby", a relative who died as an infant. This has always struck me as humorous, yet quite poignant.
I would say use the title "Uncle" freely and with the respect due to a close member of your family. My mother's brother died in a Japanese POW camp in World War II, some 25 years before I was born, yet I proudly refer to him as my Uncle Arnold.