The coast turns south past Culwatty Bay to Rosneath Point at the tip of the peninsula, which was directly north of the Greenock Princes Pier railway station, 2 miles (3 kilometres) distant on the southern shore of the Firth.

The name Rosneath may have its roots in this era, being derived from the Gaelic Ros Neimhidh,[3] meaning "promontory of consecrated ground".

[citation needed] A more visible example is Roseneath Street in Greenock, which looks over the River Clyde to Rosneath Point, and dates from around 1870.

[5] Located further uphill from previous versions, it belonged to the Duke of Argyll, whose family retained it until Princess Louise died in 1939.

The Rosneath Peninsula was formerly in the traditional County of Dunbarton until local government reorganisation moved it into the Argyll and Bute council area in 1996.