The original St Mary's Anglican church was built of native timbers on donated land on the
Onkaparinga Road midway between the
Sturt and
Brownhill Creek crossings. The first service held there was conducted on 4 July 1841 by Rev.
C. B. Howard, then took alternate Sundays with
James Farrell. It has been called the second Anglican church in the colony, the first being
Trinity Church in 1836.
St John's church on
Halifax Street, another contender for second place, however, did not hold its first service until 24 October 1841. The church was built by voluntary labour, of
stringybark (possibly
Eucalyptus obliqua or
E. baxteri) timber, on land donated by
John Wickham Daw (c. 1797–1872), and all materials and furnishings were paid for by voluntary contributions, including by early settler Capt.
Ray Boucaut of the nearby property "Sarnia". The name was chosen by Daw in recognition of his home parish
St Mary Abbots of
Kensington. England. A vicarage was completed around the same time. The old building served as a schoolroom for many years and was demolished in 1928. The village of St Mary's on the Sturt, which became the Adelaide suburb of
St Marys was named after the church. The church, its graveyard and its gates were listed on the
South Australian Heritage Register on 14 August 1986 and on the now-defunct
Register of the National Estate on 15 May 1990. ==Ministers==