Looking for a Samuel Family of Wales

I am looking for my Great Grand Father's family:
His name was James Samuel (1857-1937) He married Ellen (Deegan) Samuel (1861-1917). They lived in New Zealand and James was a bullock driver.
They had 5 children: William, Thomas James, Mary Ellen, Margaret and John Joseph (Jack)
All I really know is James's Father and Mother were Margaret and Benjamin Samuel and they were from Wales and James had one brother and a sister.