some Letts for you from Property owners County Wexford circa 1870
Benjamin Lett Ballyvergin, Adamstown, owned 517 acres.
Edwd. J. Lett Millpark-road, Enniscorthy owned 388 acres.
George Lett Hollfort, Enniscorthy owned 57 acres.
Nicholas Lett Bridgetown owned 190 acres.
William Lett Tinnacross, Enniscorthy, owned 14 acres.
William Lett Tomgarrow owned 16 acres.
and on a listing for Ferns Old Graveyard, Co. Wexford Ireland :
Charles Lett 1822
Nowlan Lett 1834 (Mr. Nowlan Lett)
William D. Lett, Esq. 1851
Mrs. Ellen M. Lett/Roche 1871
these are from
http://www.from-ireland.net/wex/graves.htm - there could be others mentioned in other graveyards included on this site.
Shane