Looking for Thomas of Aberdare Glamorgan Wales

My father was William John Thomas born 1/7/1908.
He married Winifred Reader Nicholson in Australia.
His father was David John Thomas born 13/9/1884.
David and his family moved to Australia about 1925.
He married Annie Jones of Wales.
Their children were William John, Gweneyth Mary, Joshua and Hannah Margaret (Peggy).
Does anyone out there know anything about this family?