Thelen, von Thelen in Thoelau, Oberfranken

Does anyone have any information about a Thelen or von Thelen family from Thoelau (someone said this is now
incorporated into Marktredwitz) in Upper Franconia.

What I have is a Georg von Thelen married a Margarethe
Gropp around 1474 there. He had six children:
Hans, Katherina, Margaretha, Balthasar, Barbara and
Veit.

Veit (born about 1475) married an Anna von Dobeneck
around 1500. The other two sons, as far as I know,
did not marry.

Did Veit have any descendants?

The only Thelens or von Thelens I can find are in
North Rhine/Westphalia.

Thank you for any information

Tom Thelen