Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
LATOUCHE
As described in historical dictionaries
Patronymica Britannica (1860)
LATOUCHE. David-Digues de la Touche, a Huguenot, settled in Ireland after the Kevocation of the Edict of Nantes. He was a scion of the noble house of Blesois, who held considerallc lands between Blois and Orleans. B.L.Gr.