Half First Cousin is in Half-First Cousin Succession Heading.
Eadfrith Deira was captured.
Edwin's son Osfrith Deira was killed.
In 1184 Simon Senlis 7th Earl Huntingdon 3rd Earl of Northampton (age 46) died. His half first cousin David Dunkeld 8th Earl Huntingdon (age 32) succeeded 8th Earl Huntingdon 1C 1065.
On 22 Sep 1629 Robert Radclyffe 5th Earl of Sussex (age 56) died at Clerkenwell [Map]. His first cousin once removed Edward Radclyffe 6th Earl of Sussex (age 70) succeeded 6th Earl of Sussex 2C 1529. His half first cousin Henry Mildmay 15th Baron Fitzwalter (age 44) de jure 15th Baron Fitzwalter 1C 1295.
On 06 Aug 1666 William wheler 1st Baronet 1611-1666 (age 55) died. He was buried at All Saints Church, Derby [Map]. His half first cousin Charles Wheler 2nd Baronet (age 46) succeeded 2nd Baronet Wheler of the City of Westminster. Dorothy Bindlosse Lady Wheler (age 40) by marriage Lady Wheler of the City of Westminster.
On 16 Jun 1741 Edward Harley 2nd Earl of Oxford and Earl Mortimer (age 52) died. His half first cousin Edward Harley 3rd Earl of Oxford and Earl Mortimer (age 42) succeeded 3rd Earl of Oxford and Earl Mortimer. Martha Morgan Countess of Oxford and Mortimer (age 42) by marriage Countess of Oxford and Countess Mortimer.
On 10 Mar 1759 Stewkley Schuckburgh 4th Baronet died unmarried. His half first cousin Charles Schuckburgh 5th Baronet (age 36) succeeded 5th Baronet Schuckburgh of Schuckburgh in Warwickshire.
On 27 Jul 1768 William Dalrymple Crichton 5th Earl Dumfries 4th Earl of Stair (age 69) died. Patrick Mcdouall Crichton 6th Earl Dumfries (age 41) succeeded 6th Earl Dumfries. His half first cousin John Dalrymple 5th Earl of Stair (age 48) succeeded 4th Earl of Stair.
In 1790 Banks Jenkinson 6th Baronet (age 69) died. His half first cousin Charles Jenkinson 1st Earl Liverpool (age 60) succeeded 7th Baronet Jenkinson of Walcot in Oxfordshire and of Hawkesbury in Gloucestershire.
On 03 Oct 1851 Charles Jenkinson 3rd Earl Liverpool (age 67) died. Earl Liverpool 1C 1796 and Baron Hawkesbury of Hawkesbury in Gloucestershire extinct. His half first cousin Charles Jenkinson 10th Baronet (age 72) succeeded 10th Baronet Jenkinson of Walcot in Oxfordshire and of Hawkesbury in Gloucestershire. Katherine Campbell Lady Jenkinson (age 71) by marriage Lady Jenkinson of Walcot in Oxfordshire and of Hawkesbury in Gloucestershire.
On 22 Oct 1855 William Molesworth 8th Baronet (age 45) died without issue. His half first cousin Reverend Hugh Henry Molesworth 9th Baronet (age 37) succeeded 9th Baronet Molesworth of Pencarrow in Cornwall. His will provided for his widow Andalusia Carstairs (age 45) to live at Pencarrow during her lifetime.
On 22 Feb 1963 William Grosvenor 3rd Duke Westminster (age 68) died. He was buried at St Mary's Church, Eccleston [Map]. His half first cousin Gerald Hugh Grosvenor 4th Duke Westminster (age 56) succeeded 4th Duke Westminster, 6th Marquess Westminster, 7th Earl Grosvenor, 13th Baronet Grosvenor of Eaton in Cheshire.
On 11 Sep 1963 Montagu Henry Edmund Cecil Towneley Bertie 8th Earl Abingdon 13th Earl Lindsey (age 75) died. His half first cousin Richard Bertie 14th Earl Lindsey 9th Earl Abingdon (age 32) succeeded 14th Earl Lindsey, 9th Earl Abingdon.
On 13 Apr 1976 John St John 20th Baron St John Bletso (age 58) died unmarried. His half first cousin Andrew St John 21st Baron St John of Bletso (age 57) succeeded 21st Baron St John Bletso 1C 1559, 18th Baronet St John of Woodford in Northamptonshire 1660.
In 1979 Francis Elliot Temple Blackwood 6th Baronet (age 77) died. His half first cousin Francis George Blackwood 10th Baron Dufferin and Clandeboye (age 62) succeeded 7th Baronet Blackwood of the Navy.
In Feb 2003 Anthony Rowland Clegg-Hill 8th Viscount Hill (age 71) died without issue. His half first cousin Peter David Clegg-Hill 9th Viscount Hill (age 57) succeeded 9th Viscount Hill of Hawkestone and Hardwicke in Shropshire, 9th Baron Hill of Almaraz and of Hawkestone in Shropshire 2C 1816, 11th Baronet Hill of Hawkestone in Shropshire.