The family remained in Clydach until 1910, moving to Ton Pentre in the Rhondda Valley where his father took up a ministry at Bethesda Chapel.

[1] Oldfield-Davies joined the newly formed Welsh Region of the BBC's radio service in 1937, as schools organiser.

He had been a regular contributor for the previous three years on the West Region station; giving talks on world events in a Welsh-language schools' programme, Cwrs y byd.

[1] His time in the role saw the number of schools receiving broadcasts rise from 126 to 700, until the start of the Second World War saw regional radio in the United Kingdom disbanded.

[1] His appointment as school's organiser has been heavily supported by the director of the Welsh region, Rhys Hopkin Morris and he took Oldfield-Davies in as a protégé.

Oldfield-Davies was the subject of several works of art, including a series of paintings by Welsh artist Sir Kyffin Williams and a bronze portrait head by Ivor Roberts-Jones.