The date of Penstowe Castle's construction is uncertain, but it was built between the [[Norman Conquest of England]] in 1066 and the end of the 12th century, near to the village of [[Kilkhampton]] in [[Cornwall]].ref One possibility is that was built by either or the Granville family during the years of [[the Anarchy]] in the mid-12th century.ref[[File:Penstowe Castle plan.jpg|thumb|left|Plan of Penstowe Castle]]