Hi Windflier, hope you’re doing well.
Yes, it is a little odd. I don’t understand why people—particularly mothers—do such things. It’s a recipe for confusion and other problems later on in life.
In my case, my father wanted to name me after himself and my mother objected strenuously. So, there was a compromise. I got two distinctly different names but they had the same initials as my dad. Thank goodness!
Lucky you. My dad got saddled with his mother's maiden name. I'm pretty sure he's the only living person sporting that moniker. It's so unwieldy that the family has called him by his nickname his whole life.