All four of my son's names begin with the letter J (don't ask - long story :-)
I used to think my mom got tongue-tied when she tried to call out one of us (seven) kids, but you oughta hear me sometimes (facepalm).
The only one I consistently get right, is my daughter, whose name begins with the letter B. Of course, her middle name begins with J, which I dare not call her too often, for fear of mixing her up with the boys ;-)
I wonder how the family with 19 kids whose children’s names all begin with J remember who is who?