[citation needed] Its churchyard was converted into Wolfe Tone Square, a public park where the gravestones can be seen stacked up at the southern end.

[7] Arthur Guinness was married in St Mary's in 1761. Notable baptisms in the church include Seán O'Casey in 1880 and Theobald Wolfe Tone in 1763.

Records show that burials in the church vaults include Anne, daughter of the Bishop of Meath (interred 14 December 1725), the Rev.

This process was supervised by a Dublin Corporation environmental officer in consultation with the Representative Body of the Church of Ireland.

[10][11][need quotation to verify] The adjoining churchyard is the final resting place of the United Irishman Archibald Hamilton Rowan (1751–1834), Mary Mercer, founder of Mercer's Hospital (died 1734), the philosopher Francis Hutcheson (1694–1746), Sir Boyle Roche, 1st Baronet (1736–1807), the Anglo-Irish politician Henry Maxwell, parish rector William Fletcher (1715–1771),[12] and Lord Norbury (1745–1831; known colloquially as the hanging judge).