Cammarch

Saint Cammarch is a Welsh saint of the undivided Church, a son of Gwynllyw Filwr, who had other sons as well, among them Glywys Cernyw and Cynfyw. His name occurs once in the pedigrees of the Iolo manuscripts and in the alphabetical genealogy of the Myvyrian Archaiology.

His festival is 8 October in the calendars of the Iolo manuscripts, in the Welsh Primer of 1633, in Nicholas Roscarrock and in a number of Welsh almanacks, mostly of the eighteenth century. He is held to be the patron of Llangammarch in Brecknockshire, although the twelfth-⁠century bard Cynddelw counts the church among the foundations of Tyssilio. The river Cammarch joins the Irfon close to the church, and the place may have taken its name from the river.

The word cammarch means a crooked horse. Cynog, son of Brychan, was nicknamed in the same way, and his festival also falls on 8 October.