Mosby Family History
Mosby Name Meaning
English (Yorkshire): habitational name, probably from Mosbrough in South Yorkshire, recorded in Domesday Book as Moresburh, from Old English mores, genitive singular of mor ‘marsh’, ‘fen’, ‘moor’ + burh ‘fortress’. Norwegian: habitational name from any of several farmsteads in southern Norway, so named from Old Norse mós (genitive case of mór ‘sandy plain’) + býr ‘farm’.
Source: Dictionary of American Family Names ©2013, Oxford University Press