John Zachariah, (circa 1882-1961) a native of Abergwili, was a carpenter and undertaker. He lived in Ynyslwyd Street and had premisies in High Street. He is named as the undertaker in many funerals from the beginning of the twentieth century.
He married Mary Jane Davies, of 18, Hill-street, Aberaman, at Siloa Congregational Chapel, Aberdare in July 1910. The officiating ministers were the Revs. D. Silyn Evans, Siloa, and H. P. Jenkins, Saron, Aberaman.