The first Luke Gardiner (died 1755) was a highly successful banker, developer and Member of Parliament for Dublin in the early 18th century. During his career he acquired a wide variety of properties throughout the city. The major continuous part, much of which he purchased from the Moore family in 1714, was a large piece of land to the East of the then established city. This estate corresponds to the modern area bounded by The Royal Canal, Dorset Street, the Western Way, Constitution Hill, Parnell Street, O'Connell Street and the River Liffey. As owner of this land, Gardiner led the development of the Northside of the city east along the river, developing what is now O'Connell Street (then Sackville Street), Dorset Street, Parnell Street and Square (then Rutland Street & Square). After his death, his son and heir Charles continued the development, finishing Rutland Square before his grandson, the second Luke Gardiner (later Lord and Viscount Mountjoy) inherited the estate and accelerated the development further East. A powerful figure, Luke II was a member of the Wide Streets Commission and MP for County Dublin.