When was the deposition of the father of Charles Lennox Duke of Richmond?
Duke of Richmond and Lennox:  In 1675, King Charles II created his illegitimate son Charles Lennox Duke of Richmond (created on 9 August 1675) and Duke of Lennox (created on 9 September 1675), and the two Dukedoms have since been held concurrently by Lennox's descendants. Charles II of England: Charles II (29 May 1630 – 6 February 1685) was king of England, Scotland and Ireland. Charles II of England:  He was king of Scotland from 1649 until his deposition in 1651, and king of England, Scotland and Ireland from the restoration of the monarchy in 1660 until his death.
in 1651