Barons Lucas (of Shenfield), first Creation (1645)
The title Baron Lucas, of Shenfield in the County of Essex, was created 13 January 1645 for Sir John Lucas, a Royalist army officer. He was succeeded according to a special remainder in the letters patent by his nephew, Charles Lucas. The title became extinct on the death of the third Baron in 1705.
Charles Lucas, 2nd Baron Lucas. Son of the first Baron's elder brother, Sir Thomas Lucas, a royalist army officer, and technically illegitimate as Thomas's parents married after he was born.
Barons Lucas (of Crudwell), second Creation (1663)
The title Baron Lucas, of Crudwell in the County of Wiltshire, was created at the request of John Lucas, her father, in 1663 for Mary, Countess of Kent, new wife of the 11th Earl of Kent and only surviving child of the 1st Baron of the first creation above. The title was created with remainder to her heirs male by Lord Kent and failing which to her heirs general without division. The 1st Baroness was succeeded by her son, who had already succeeded as 12th Earl of Kent, and who was successively created Marquess of Kent and Duke of Kent. In 1718, the Duke of Kent's elder son, Anthony, Earl of Harold, was summoned to Parliament by a writ in acceleration as Baron Lucas, and is usually numbered as the 3rd Baron. In view of the death of both his sons and the consequent extinction of the dukedom at his death the Duke managed to obtain in 1740 only a new marquessate, Marquess Grey. However he obtained a special remainder of the marquessate, in default of his heirs male, to his granddaughter, Jemima Campbell. On the Duke's death later that year, the Barony of Lucas, along with the Marquessate of Grey, passed to this granddaughter, who became 2nd Marchioness Grey and 4th Baroness Lucas of Crudwell. On her death, the Marquessate became extinct and the Barony passed to her eldest daughter, Amabel, Lady Polwarth, who became 5th Baroness Lucas. In 1816 she was created Countess de Grey, of Wrest in the County of Bedford, in the Peerage of the United Kingdom, with a special remainder to her sister and her heirs male. On her death, the Earldom of de Grey and the Barony of Lucas passed under their respective remainders to her nephew, the 3rd Baron Grantham, who became 2nd Earl de Grey and 6th Baron Lucas. On his death, the Earldom of de Grey passed to his nephew, the 2nd Earl of Ripon, and the Barony passed to his daughter, Anne, Countess Cowper, who became 7th Baroness Lucas. On her death, the Barony passed to her son, the 7th Earl Cowper, who became 8th Baron Lucas. He was restored as 3rd Baron Butler in the Peerage of England and 4th Lord Dingwall in the Peerage of Scotland upon the termination of the attainder on those titles. On his death, the Earldom of Cowper and its associated titles became extinct, the Barony of Butler became abeyant, and the Barony of Lucas and the Lordship of Dingwall passed to his nephew, Auberon Herbert, who became 9th Baron Lucas and 5th Lord Dingwall. He was confirmed in the titles in 1907 by the Committee for Privilegesof the House of Lords. After this, the succession was straightforward, the Barony and Lordship passing to the 9th Baron and 5th Lord's sister Nan Ino Herbert , then her daughter, and then her son, who is the current holder of the titles. The Lord Lucas and Dingwall is a grandson of the 3rd Earl of Selborne, and so is also in remainder to the Earldom of Selborne and its subsidiary titles. He is also one of the co-heirs to the Barony of Butler.
