His paternal grandparents were Other Windsor, 2nd Earl of Plymouth, and the former Elizabeth Whitley. In 1736, his maternal grandfather, Thomas Lewis, died, after naming Plymouth as the heir to his estates.[2]
In March 1750, Plymouth was appointed Constable of Flint Castle, Comptroller of the records in the counties of Chester and Flint, and Comptroller of the Pleas, Fine and Amerciaments in county Caernarvon. His degree was promoted to MA by seniority in July.[1]
On 11 August 1750, Plymouth married Hon. Catherine Archer (d. 1790), eldest daughter of Thomas Archer, 1st Baron Archer and Catherine Tipping.[1] Together, they were the parents of:
When he died in 1771, Plymouth was succeeded by his son Other. On the death of the 4th Earl's youngest son Henry, the earldom became extinct.[1] The barony of Windsor remained in abeyance until 1855 when the abeyance was terminated in favour of Lady Harriet Windsor-Clive (third child and second daughter of the 5th Earl), who became the 13th Baroness Windsor. Her eldest son Robert Windsor-Clive predeceased her and she was succeeded by her grandson, Robert, 14th Baron Windsor, who was a prominent Conservative politician.[1]
^ abcdeSir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 592.
^G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume IX, page 240.