Sill Family History
Sill Name Meaning
English: from the Middle English personal name Sil a pet form of Silvester Silvein (see Selwyn ) or perhaps Cecily (see Sisley ). Compare Silcox Sillett . English: habitational name from one or more places called with Old English syle sylu ‘bog mire’. North German: topographic name from Low German süll sill ‘sill threshold ramp’. German: metonymic occupational name from Middle High German sil(e) ‘rope of the harness (for horses etc.)’ for a maker or user of such equipment.
Source: Dictionary of American Family Names 2nd edition, 2022