Earl Derwentwater
Earl Derwentwater is in Earldoms of England Alphabetically, Earldoms of England Chronologically, Forfeit Earldoms of England.
1st: Francis Radclyffe 1st Earl Derwentwater. Died 1697. Son.
2nd: Edward Radclyffe 2nd Earl Derwentwater. Died 1705. Son.
3rd: James Radclyffe 3rd Earl Derwentwater. Died 1716. Forfeit.
On 07 Mar 1688 Francis Radclyffe 1st Earl Derwentwater (age 63) was created 1stEarl Derwentwater.
In Apr 1697 Francis Radclyffe 1st Earl Derwentwater (age 72) died. His son Edward Radclyffe 2nd Earl Derwentwater (age 42) succeeded 2nd Earl Derwentwater, 4th Baronet Radclyffe of Derwentwater in Cumberland.
On 29 Apr 1705 Edward Radclyffe 2nd Earl Derwentwater (age 50) died. His son James Radclyffe 3rd Earl Derwentwater (age 15) succeeded 3rd Earl Derwentwater, 5th Baronet Radclyffe of Derwentwater in Cumberland.
On 10 Jul 1712 James Radclyffe 3rd Earl Derwentwater (age 23) and Anna Maria Webb Countess Derwentwater (age 20) were married. She by marriage Countess Derwentwater. He the son of Edward Radclyffe 2nd Earl Derwentwater and Mary Tudor Countess Derwentwater (age 38). He a grandson of King Charles II of England Scotland and Ireland. 
The 1715 Battle of Preston was the final action of the 1715 Jacobite Rebellion. It commenced on 09 Nov 1715 when Jacobite cavalry entered Preston [Map]. Royalist troops arrived in number over the next few days surrounding Preston forcing the Jaocbite surrender. 1463 were taken prisoner of which 463 were English. The Scottish prisoners included:
George Seton 5th Earl of Winton (age 37). The only prisoner to plead not guilty, sentenced to death, escaped from the Tower of London [Map] on 04 Aug 1716 around nine in the evening. Travelled to France then to Rome.
On 24 Feb 1716 William Gordon 6th Viscount Kenmure was beheaded on Tower Hill [Map].
On 09 Feb 1716 William Maxwell 5th Earl Nithsale was sentenced to be executed on 24 Feb 1716. The night before his wife (age 35) effected his escape from the Tower of London [Map] by exchanging his clothes with those of her maid. They travelled to Paris then to Rome where the court of James "Old Pretender" Stewart (age 26) was.
James Radclyffe 3rd Earl Derwentwater (age 25) was imprisoned in the Tower of London [Map]. He was examined by the Privy Council on 10 Jan 1716 and impeached on 19 Jan 1716. He pleaded guilty in the expectation of clemency. He was attainted and condemned to death. Attempts were made to procure his pardon. His wife Anna Maria Webb Countess Derwentwater (age 23), her sister Mary Webb Countess Waldegrave (age 20) [Note. Assumed to be her sister Mary], their aunt Anne Brudenell Duchess Richmond (age 44), Barbara Villiers 1st Duchess of Cleveland appealed to King George I of Great Britain and Ireland (age 54) in person without success.
On 24 Feb 1716 James Radclyffe 3rd Earl Derwentwater (age 25) was beheaded on Tower Hill [Map]. Earl Derwentwater, Baronet Radclyffe of Derwentwater in Cumberland forfeit.
William Murray 2nd Lord Nairne was tried on 09 Feb 1716 for treason, found guilty, attainted, and condemned to death. He survived long enough to benefit from the Indemnity Act of 1717.
General Thomas Forster of Adderstone (age 31) was attainted. He was imprisoned at Newgate Prison, London [Map] but escaped to France.
On 14 May 1716 Henry Oxburgh was hanged, drawn and quartered at Tyburn [Map]. He was buried at Church of St Gile's in the Fields. His head was spiked on Temple Bar.
The trials and sentences were overseen by the Lord High Steward William Cowper 1st Earl Cowper (age 50) for which he subsequently received his Earldom.