The name Zelle is a variation of Zell.
Zell is rarely used as a baby name for boys. It is not listed in the top 1000 names.
Baby names that sound like Zell include Zelle, Zael, Zail, Zaile, Zale, Zayl, Zayle, Zeal, Zeale, Zeel, Zeele, Zeyl, Zeyle, Zoel, Zoylow, Aislie, Giles (Dutch, English, and German), Gilles (French), Zaele, and Zahal (English).
† English pronunciation for Zell: Z as in "zoo (Z.UW)" ; EH as in "ebb (EH.B)" ; L as in "lay (L.EY)"