Grassby Family History
Grassby Name Meaning
from Grasby (Lincs) which is recorded as Grosebi Grosbi in 1086 Gressebi in 1165 and Greseby in 121 The place-name derives from Old Scandinavian bý ‘farmstead settlement’ with a very uncertain first element possibly either Old Scandinavian grjót (genitive grjóts) ‘gravel stones’ or the Old French personal name Gros(se) (compare Gross (2)) though neither accords with the full range of early spellings.
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016