He subsequently was appointed seventh canon in Canterbury Cathedral (14 November 1822 to 1828), rector of St. George-the-Martyr, Canterbury (1827–8), prebendary of Osbaldwick at York Cathedral (15 February 1824 to September 1828), and prebendary of Wistow there (18 September 1828 to 1852).
As Dean of Norwich he had a seat in convocation, where he took an active part in the debates, as a moderate.
Pellew died at the rectory, Great Chart, on 13 October 1866, and the east window of the church was afterwards filled with stained glass in his memory.
Pellew printed sermons and tracts, including a ‘Letter to Sir Robert Peel on the means of rendering Cathedral Churches most conducive to the Efficiency of the Established Church.’ Many of his sermons were included in two volumes printed in 1848, and entitled ‘Sermons on many of the leading Doctrines and Duties taught by the Church of England.’ In 1847 he published ‘The Life and Correspondence of Addington, first Viscount Sidmouth,’ his father-in-law.
He married, on 20 June 1820, Frances, second daughter of Henry Addington, Prime Minister and first Viscount Sidmouth, and left one son Henry Pellew (who inherited but chose not to assume the title Viscount Exmouth in 1922),[1][2] and three daughters.