Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
ROCHE
As described in historical dictionaries
Patronymica Britannica (1860)
ROCHE. Roache, or Roche, a parish in Cornwall; an abbey in Yorkshire; and a river in Lancashire. The first-named place was so called, according to Tonkin, from St. Roche, a Marsellaise saint ; but it is more likely a provincial pronunciation of rocli, for in 1291 it is called De Rupe. D. Gilbert's Cornw., iii. 30(5.
Origin: Celtic
Region of origin: British Isles
Country of origin: Ireland
Religion of origin: Christian
Language of origin: Gaelic