For Pedersen there are 2064 on Yasni with different names.
Among the most common last names on Yasni Pedersen is on position 1220.
The name "Pedersen" very probably comes from the region and means of my knowledge scandinawischen> Peder's son. He was probably at the times when usually there is (still) had no surname.
(Sent from: Wolfgang Pedersen, Dannenberg)