Demchak Family History
Demchak Name Meaning
Americanized spelling of Czech and Slovak Demcák, or Polish Demczak, from a pet form of a vernacular form (Czech and Slovak Demet(e)r, Polish Dymitr) of the Greek personal name Demetrios (Latin Demetrius; see Demetriou). Ukrainian: from a pet form of the personal name Demjan (see Damian).
Source: Dictionary of American Family Names ©2013, Oxford University Press