You were named after a relative or a saint.
There were about 20 common names and that was it, a few outlandish names but most people were called Mary, Anne, Sarah, Catherine, Elizabeth, John, James, Archie, Willian, David names like that.
You had 4 or more people with the same name in the same family.
No "oh we cannot have that there will be 4 in the same class!"
No weird made up, funny spellings, no celeb names, no one wanted a unique name.
I think I am harking back to that time, am about to start the process of naming my fourth daughter. Maybe I will just call her Mary.