Note 29 — Chapter IX · Place-name Stories
Reading edition
Other instances of the like shortening occur in words like cefnder, ‘a cousin,’ for cefnderw, and arđel, ‘to own,’ for arđelw. As to Amman, it enters, also, into a group of Glamorganshire place-names: witness Aber Amman and Cwm Amman, near Aberdare. ↑