[Shima-Mizu will get a kick out of this...]
When my husband joined his fraternity and became a Sinfonian, there were multiple men with common names. Out of 60 brothers:
There were three guys named Joel;
There were two Nathans and two or three Tims and two or three Toms;
There were about three guys named Mike or Michael;
There were at least three guys named Chris or Christopher, to the point where one was "Topher" (and this was years before Topher Grace or anyone I knew ever had the name Topher);
and (drumroll...)
There were NINE guys named Dave or David, to the point where one of them was just called "Id". Teske, Motz, Bauder, Ashby, Loy, Settje, Palmer, Petzold, Lindstedt. The first six I knew from memory, too.
I checked his list of family trees to help my memory, and discovered that there was a family line where a big brother David had a little named David had a little named David had a little named David. Four in a row! Though only two or three would have been brothers at the same time...