I have a book by Máirín Johnston (she was reared in the Pimlico area) called "Around the Banks of Pimlico" Pimlico is a long narrow street running from the Coombe at Ardee Street to the corner of Thomas Court Bawn and Marrowbone Lane. Approaching the Bawn Pimlico swings left beyond Meath Place and the Banks. Quoting from the book It is one of the oldest Streets in the Earl of Meath's Liberties and in medieval times was called Donoure Street. The names of some of the streets in the area came with the arrival of the English immigrants to Dublin....Pimlico, Tripoli, Marrowbone (Marylebone) Lane and Spitalfields.
Other streets in the area are Cork Street ( there was a Fever Hospital Street but I do not know if it is still there), Meath Street (after the Earl obviously) and School Street.
Máirín mentions evangelical missionary societies. Some missionaries these guys
When it comes to matters of religion the Irish should be left well alone. In Máirín's great great grandmother's day The Irish Church Missions to Roman Catholics (founded in 1843) worked in the area. The Mission was led by its founder, a fanatical zealot, Rev Alexander (A. R. C) Dallas (Born in Colchester, Essex in 1791. Died 1869) His preaching led to much bigotry and sectarian riots. He was educated at Oxford. He was appointed Rector of Wanston, Hampshire in 1828. The founding of his Mission coincided with the Famine. People in Pimlico probably knew of several of these groups which attempted to convert the Irish Catholics. Missionary groups included the Association for Discountenancing Vice (1792), Hibernian Bible Society (1806), the Sunday School Society (1809), the Religious Tract and Book Society (1810) and the Irish Society (1818). Source: The Encyclopaedia of Ireland edited by Brian Lalor
All the Best, Chris