But that was my point...
as I said it was a joke game. But the staff may have had it in mind that there were a line of Belmont's (not all Belmont's but some) Way back at the start in 1986.
So it may have never been officially recognised by the cannon, but it does push more to the fact that they always thought that at some point there was a Line Of Simons, and then In Akumajō Dracula / SCV4 they may have just wanted to go for it, but it could be a remake, But with famous Lines it is very common to call ones self after a great member, oh could be like a vampire hunter name, sort of like confirmation name, the possibilities are endless.
I of Couse have my own Akumajō Dracula TimeLine.