[2] In the 13th century the Stewart family, descendants of Walter fitz Alan, constructed a new residence at the north end of the old High Street of Renfrew.

[3] It was captured by the English during the Wars of Scottish Independence, and King Edward I of England granted Renfrew to Henry de Lacy, Earl of Lincoln, in 1301.

The name Castlehill Gardens and a low mound can still be seen, though excavations in 1997 discovered no evidence of the castle other than pottery sherds dated to the 12th-14th centuries.

[4] The King's Inch is no longer an island, being on the south bank of the Clyde, and Braehead Power Station was built over the area in the 20th century.

Investigations in 2005 identified the foundations of Elderslie House at grid reference NS 5140 6762, as well as features on the same site that could represent the 15th-century castle.