Baron Lucas of Crudwell is in Baron Lucas.
On 07 May 1663 Mary Lucas Countess Kent (age 19) was created 1st Baron Lucas of Crudwell with a special remainder to her heirs male by her husband Anthony Grey 1453 1490 11th Earl Kent (age 18), and failing which, to her heirs female without division; an unusual provision meaning it wouldn't become abeyant in the event of more than one daughter.
On 01 Nov 1702 Mary Lucas Countess Kent (age 58) died. Her son Henry Grey 1st Duke Kent (age 31) succeeded 2nd Baron Lucas of Crudwell.
On 08 Nov 1718 Anthony Grey 1453-1490 (age 23) by writ of acceleration 3rd Baron Lucas of Crudwell.
On 21 Jul 1723 Anthony Grey 1453-1490 (age 28) died by choking on an ear of barley the beard of which stuck in his throat. His niece Jemima Campbell 2nd Marchioness Grey succeeded 4th Baroness Lucas of Crudwell.
On 10 Jan 1797 Jemima Campbell 2nd Marchioness Grey (age 73) died. Marquess Grey extinct. Her daughter Amabel Yorke Countess Grey 1751-1833 (age 45) succeeded 5th Baroness Lucas of Crudwell.
On 04 Mar 1833 Amabel Yorke Countess Grey 1751-1833 (age 82) died. Her nephew Thomas de Grey 2nd Earl de Grey (age 51) succeeded 2nd Earl de Grey, 6th Baron Lucas of Crudwell.
On 14 Nov 1859 Thomas de Grey 2nd Earl de Grey (age 77) died. His nephew George Frederick Samuel Robinson 1st Marquess Ripon (age 32) succeeded 3rd Earl de Grey, 4th Baron Grantham, 7th Baronet Robinson of Newby in Yorkshire. His daughter Ann Florence Robinson Countess Cowper (age 53) succeeded 7th Baroness Lucas of Crudwell.
In 1880 Ann Florence Robinson Countess Cowper (age 74) died. Her son Francis Thomas Cowper 7th Earl Cowper (age 45) succeeded 8th Baron Lucas of Crudwell.
On 18 Jul 1905 Francis Thomas Cowper 7th Earl Cowper (age 71) died. Earl Cowper, Baron Cowper of Wingham in Kent and Baronet Cowper of Ratling Court in Kent extinct. His nephew Auberon Herbert 9th Baron Lucas (age 29) succeeded 9th Baron Lucas of Crudwell.
On 03 Nov 1916 Auberon Herbert 9th Baron Lucas (age 40) was killed in action. He was unmarried. His sister Nan Ino Cooper 10th Baroness Lucas (age 36) succeeded 10th Baroness Lucas of Crudwell.
On 30 Apr 1917 Lieutenant-Colonel Howard Lister Cooper Baron Lucas and Nan Ino Cooper 10th Baroness Lucas (age 36) were married. He by marriage Baron Lucas of Crudwell.
On 03 Nov 1958 Nan Ino Cooper 10th Baroness Lucas (age 78) died. Her daughter Anne Rosemary Cooper 11th Baroness Lucas (age 39) succeeded 11th Baroness Lucas of Crudwell. Major Robert Jocelyn Palmer Baron Lucas (age 39) by marriage Baron Lucas of Crudwell.
In 1991 Anne Rosemary Cooper 11th Baroness Lucas (age 72) died. Her son Ralph Palmer 12th Baron Lucas (age 39) succeeded 12th Baron Lucas of Crudwell.