Zimmerman's father wasn't a judge
“Robert J. Zimmerman served as a full-time magistrate from 2000-2006. Please be advised that in Virginia magistrates are judicial officers, but they are not considered "judges" and do not possess trial jurisdiction. More detailed information on the role of the magistrate in Virginia is available on Virginia's Judicial System Website .”
Zimmerman: Dad worked as magistrate
A magistrate in Virginia is a justice of the peace.
§ 19.2-33. Office of magistrate.
"The office of magistrate shall be vested with all the authority, duties and obligations previously vested in the office of justice of the peace prior to January 1, 1974."