Monkstown Avenue joins two Monktown roundabouts - the Monkstown Castle roundabout and the roundabout locally known as the TEK roundabout (A dairy was located near the roundabout and traded under the name "Tel-El-Kebir")

On maps of the 1850s, Monkstown Avenue is shown as an unnamed tree-lined rural road with just 5 houses, each very substantial, and all set back from the road with tree-lined avenues to them.

Some issues of Thoms Directory include Carrickbrennan Road as part of Monkstown Avenue.

In Griffiths Valuation, the houses are listed under the heading "MountAshton"