St. Martin's medieval Parish Church was situated North of St. Werburgh's Church (Church of Ireland). It lends its name to St. Martin's Lane (off Werburgh Street), preserving the tradition of its site.
- In Celtic and Danish times, the parish (now St Werburgh) was known as that of St. Martin of Tours.
St. Martin's was assigned to the Chancellor of St. Patrick's Cathedral.
- In 1219-20 it was absorbed within St. Werburghs (McNeill 1950, 42; Gilbert 1854-9, 1, 28).
- In 1529, the remains of St Martin’s church are said to have been still visible.
- In the 16th and 17th centuries, it had chapels to St Martin, Our Lady and St Catherine.
- In 1662, the church was enlarged, acquiring at that time a square tower at the East end.
In 1715-1719 St. Martin's was re-built to the designs of Colonel Thomas Burgh – the architect who designed Trinity College Library. The façade to Werburgh Street dates from this time.
Burials exposed in the 18th century on the west side of Werburgh St. were thought to be part of an associated cemetery.