biomistake - sounds like a really grea conversation with the "teenager" - I agree w/joletabey - sounds like it would be most advantageous to get to know this person!
Regarding Jersey Giants - I have two lines, one from Bobbi Porto, the other from Maria Hall. Both indicated to me that their original stock came from Golda Miller, but they have since outbred with other lines. I've actually been searching for some really good black stock (I have B/B/S), and have a few feelers out there - I'm very pleased with my small breeder flock this year, but I really would love to have some known Golda Miller stock as well.