Renfrew was a royal burgh that returned one commissioner to the Parliament of Scotland and to the Convention of Estates.
After the Acts of Union 1707, Renfrew, Dumbarton, Glasgow and Rutherglen formed the Glasgow district of burghs, returning one member between them to the House of Commons of Great Britain.
List of burgh commissioners
Renfrew was represented at meetings on 6 April 1478, 2 April 1481, 2 December 1482, 9 May 1485, 1 October 1487 and 6 October 1488, though the commissioners' names are unknown.
References
Renfrew (Parliament of Scotland constituency) Wikipedia(Text) CC BY-SA