Foster: Jeffreys, William, s. Ric., of Llanurenoe (Llanywern), co. Brecon, gent. Jesus Coll., matric 16 Mar 1705-6, aged 17; BA 1709; either this or the next man perhaps vicar of Aberyskir, co. Brecon, 1713-63, and of Llanvihangel Crucorney, co. Monmouth, 1722-65. See Foster's Index Eccl.