Double First Name Stored In orders.OrderShipName

I've got a strange little quirk going on here and I'm assuming I caused it somewhere.

My transactions are going through just fine. Both with PayPal and with Credit Cards. But when the Orders show up in the database, in each case the OrderShipName field looks like this ...

Joe Joe Jones
Mary Mary Smith
Bill Bill Brown

I figure somewhere in all the pointing and clicking and code tweaking that somewhere I've got a variable that's not set right. It's either one of two cases ...

1) (Firstname + Firstname) + Lastname
2) Firstname + (Firstname + Lastname)

Either way, the end result is the same. Mike Mike Hunt :-)

I've picked through all the code very carefully and I don't see anyplace where it's doubled up like this. Anybody have any ideas?

The business is not suffering for this. I can easily go in and tweak the database after an order arrives. The order volume is not heavy yet but if it does pick up some steam, I'm not gonna wanna do this every day for dozens of orders.

Thanks, Bob Hunt