Saunders was ordained a priest in 1825. In 1832 he was appointed as vicar of Ravensthorpe, Northamptonshire, resigning in 1835. He had also been made a domestic chaplain to Richard Bagot, Bishop of Oxford, in 1832. He was awarded the degree of Doctor of Divinity in 1842
He served as Headmaster of Charterhouse School from 1832 to 1853, and was then Dean of Peterborough from 1853 until his death. In 1872 he declined the Deanery of Winchester.
He married Emma Frances Walford in 1838 and had 10 children.
- Persons: Saunders, Augustus Page (1825–1835) in "CCEd, the Clergy of the Church of England database" (Accessed online, 5 February 2014)
- "Fasti Ecclesiae Anglicanae 1541-1857: volume 8: Bristol, Gloucester, Oxford and Peterborough dioceses". British History Online. Retrieved 9 May 2013.
- "Library Archive". Royal Society. Retrieved 9 May 2013.