Sonntag Family History
Sonntag Name Meaning
German and Jewish (Ashkenazic): from Middle High German sun(nen)tac German Sonntag ‘Sunday’ a nickname for someone who had some particular connection with Sunday. The German surname may have arisen from a personal name for a child born on a Sunday for this was considered a lucky day. Among Jews it seems to have been one of the group of names referring to days of the week that were distributed at random by government officials.
Source: Dictionary of American Family Names 2nd edition, 2022