Rowland Owen , 3 Eryri Terrace, Y Fron was the adopted son of John Daniel Roberts. His biological parents were William Owen, Hen Gapel, Cesarea & Elizabeth Williams from Beddgelert.
Rowland Owen was born on the 6th May 1895 at Hen Gapel & died in 3 Eryri Terrace in 1968. I have failed to find an Obituary but he is buried at Carmel cemetery with his wife Elizabeth J. Hughes. I have a lengthy Obituary for her in 1975.
I can only echo Emyr Borth's comments that his mother died soon after birth & with a large family, he was adopted by close neighbours.
John Daniel Roberts is in my family tree & The Penrhyn Oer, Cesarea family is mentioned in a fascinating article about Upper Llandwrog written by the Rev William Williams, Llanwnda (Einion) in 1910.