Walter was born in the parish of Saint Arvans, Monmouthshire, south Wales in 1611 and studied at the University of Oxford, matriculating as a member of Jesus College, Oxford in 1633 and obtaining his Bachelor of Civil Law degree in the same year.
Jesus College.
During the English Civil War, Walter seems to have left Monmouthshire for London. In 1653, Walter became vicar of Street Woolos in Newport, but he was ejected from there in 1662 after the Restoration. In 1672, he was given a licence to minister in Llantarnam and later inspired the Independent congregation in Mynyddislwyn, to whom he left some money in his will.
He died sometime before 8 August 1678.
