 Folk etymology has the name Inchaffray taken from the Gaelic "innis abh reidh" (island of the smooth water), but the earliest attested form of the name is the Latin "Insula missarum" (island of the masses), mass in Gaelic being "oifrend" and Welsh "offeren", thus island of the offerings.A charter of Jonathan, Bishop of Dunblane, refers to the place "qui uocatur lingua Scottica Inche Affren" (="which is called in the Gaelic language "Inche Affren"") and comparative usage shows that "Insula Missarum" was taken as a translation, e.g.