Jef Nys's birth name is Jozef Nys.
Jef Nys was born on January 30, 1927, in Berchem, Flanders, Belgium.
Jef Nys died on October 20, 2009, in Antwerp, Belgium of cancer.
Def Jef's birth name is Jeffrey Forston.
Jef Demedts's birth name is Jozef Demedts.
Jef Cassiers's birth name is Jozef Cassiers.
Jef Mermans's birth name is Joseph Mermans.
Jef Groff's birth name is Jeffrey Groff.
Jef Bruyninckx's birth name is Joseph Bruyninckx.
Jef McClure's birth name is Jefree Richard McClure.
Jef Geeraerts's birth name is Jozef Adriaan Anna.
Jef Mertens's birth name is Mertens, Joseph Marie Franois.
Jef de Groot's birth name is Josephus Nicolaas de Groot.