Lord Augustus FitzClarence (1 March 1805 – 14 June 1854), was the youngest illegitimate son of William IV of the United Kingdom and his long-time mistress Dorothea Jordan.

In 1829 Augustus was appointed a Chaplain of his father (then Duke of Clarence and St Andrews)[1] and later that year he was presented with the vicarage of Mapledurham in Oxfordshire, succeeding John Sumner (later Bishop of Chester and Archbishop of Canterbury).

[2] King William IV was a lavish benefactor of the church and the parish and, among his gifts was the clock in the tower which bears his initials, ″W R.″; he also made generous contributions to extend the vicarage and to enclose its adjacent grounds with substantial provisions for the foundation of a new school in the village.

The marvellous collection of silver gilt communion plate presented to the church by Lord Augustus shortly after his appointment was probably in turn a gift from his father.

[3] In 1830 he was appointed Chaplain in ordinary to his father (now King William IV),[1] and on 24 May 1831 was granted the rank of a marquess' younger son, being appointed Chaplain to Queen Adelaide after his father's accession to the throne in 1832.