by Andy ;—) (guest)
10/15/2009, 12:10 AM
According to Seibicke*, ISELIN is a short form (I would say: pet form) of names beginning with IS(EN) (such as Isger). This name element is itself shortened from "isarn," Germanic *isarna, Old High German "isarn," iron.
* Wilfried Seibicke: Deutsches Historisches Vornamenbuch, Berlin 1996-2006