I do find it a tad strange, I'd rather choose a name that honours someone else the second time, or suits that particular first name, or whatever. But it's still not as bad as all the same first name! I used to have these customers, the dad was called Frank (Middle Name), then the two sons were both called Frank, with a different middle name! So the dad went by Frank, and the two sons used their middle names. Why not just make Frank the middle names in the first place??