English and Irish (of Norman origin): habitational name from Lassy
in Calvados, named from a Gaulish personal name Lascius (of
uncertain meaning) + the locative suffix -acum. The surname is
widespread in Britain and Ireland, but most common in
Nottinghamshire. In Ireland the family is associated particularly with
County Limerick.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
867,974
Historical Documents & Family Trees with Lacy
The information for this chart came from the U.S. Immigration Collection at Ancestry.co.uk.
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