Janco Family History
Janco Surname Meaning
Slovak (mainly Jančo); Czech (Jančo): from a derivative of the personal name Jan.
Perhaps also an Americanized form of Hungarian Jancsó (a derivative of the personal name János; see Janos) and of Hungarian Jankó.
Slovenian, Croatian, Polish, Slovak and Czech Janko.
Source: Dictionary of American Family Names 2nd edition, 2022
