It is hit or miss on the German side of my family. About 50% have two middle names. I am one of that 50%, although it has nothing to do with my heritage. My two middle names are the middle names of my mother’s two lifelong best friends.
I was baptized with my first and middle, and then added my Confirmation name. My full name including Confirmation name is on my college and grad school diplomas since I asked for it. I imagine it’s not legally my name?