yeah... I asked about that too (at the yahoo group)
But who? When JP can have a brother almost 30 years younger, it could be everyone... This person, the narrator, has to be around 18 to 26 (that was usual age of the narrators except Stef at the last book), he could be 16 but not less. So he's born around 1980 or earlier. So it can't be Brad's or other kids (nor even Bitty's as I thought about for a while), they were too young. So that leaves us with JP and his brother John, or JP's partners then (Roger? who else? maybe Sam...), Stef, maybe Greg, Isidore and Frank,... He should be Crampton, Schluter or Hayes... It requires to re-read the Be Rad or the Land Whore to notice some small mention of something somewhere that would make possible for Mark to rustle up some offspring ;-D I don't suppose Mark would come up with some loser outside the three families that would like to break inside...