I first came to this question when I was working on a Mother's Memory book for my daughter when she got married. It starts way back to my mother and works it's way to my daughter on her wedding day. It was in those pages that the question was posed; What is your earliest memory? Every time I was ready to write something down, I came up with a new one, so decided to spend a couple of days mulling it over. Finally I found that I could not go back any further; the memory that I came up with was of my Great Grandma.
I could go on to tell you more, but that would no longer be MY memory; it would be of stories I have heard from other family members.
As I wrote of this in my daughter's book, I had to go back and figure out how old I would have been at this time. Well, my Great Grandma died in 1956; I was 3 years old...
Wishing you moments of going back to your earliest memory.