On 24 Aug 1751 James Aston 5th Baronet (age 28) died of smallpox without male issue. His fourth cousin once removed Philip Aston 6th Baronet (age 40) succeeded 6th Baronet Aston of Tixall.

In 1770 John Kennedy Lord Kennedy (age 98) died. His fourth cousin once removed Thomas Kennedy 9th Earl Cassilis succeeded 9th Earl Cassilis. A dispute arose between the heir general William Douglas 4th Duke Queensberry (age 45) and the heir male Thomas Kennedy 9th Earl Cassilis as to who should succeed to Earl Cassilis. On 29 Feb 1760 the Court of Session found the right to the estates to be with Thomas Kennedy 9th Earl Cassilis. On 27 Jan 1762 the House of Lords found the right to the title to be with Thomas Kennedy 9th Earl Cassilis.

On 28 Nov 1823 Richard Philipps 1st Baron Milford (age 79) died. His fourth cousin once removed Rowland Henry Philipps 8th Baronet (age 35) succeeded 8th Baronet Philips of Picton Castle.

On 28 May 1836 George Gordon 5th Duke Gordon (age 66) died without legitimate issue at Belgrave Square, Belgravia. Duke Gordon extinct. His fourth cousin once removed George Gordon 9th Marquess Huntly (age 74) succeeded 9th Marquess Huntly. Catherine Anne Cope Marchioness Huntly by marriage Marchioness Huntly.

On 23 Jul 1844 George Annesley 2nd Earl Mountnorris (age 73) died. Earl Mountnorris of Mountnorris Castle in Armagh and Baron Altham extinct. His fourth cousin once removed Arthur Annesley 10th Viscount Valentia (age 58) succeeded 10th Viscount Valentia. Eleanor O'Brien Viscountess Valentia by marriage Viscountess Valentia.

On 04 Dec 1846 William Joseph Stourton 18th Baron Stourton (age 70) died. His son Charles Stourton 19th Baron Stourton (age 44) succeeded 19th Baron Stourton. His fourth cousin once removed Mary Lucy Clifford Baroness Stourton (age 47) succeeded Baroness Stourton.

On 31 Jan 1948 Theophilus George Biddulph 8th Baronet (age 73) died. His fourth cousin once removed Francis Henry Biddulph 9th Baronet (age 65) succeeded 9th Baronet Biddulph of Westcombe in Kent.

In 1972 Ralph Raphael Stanley de Marie Haggerston 12th Baronet (age 60) died. His fourth cousin once removed Michael Fergus Constable Maxwell-Scott 13th Baronet (age 50) succeeded 13th Baronet Haggerston of Haggerston Castle in Northumberland.

On 22 Dec 1974 Arthur Victor Agar-Robartes 8th Viscount Clifden (age 87) died without male issue. He was buried at St Hydroc's Church, Lanhydrock. Viscount Clifden of Gowran in County Kilkenny extinct. His fourth cousin once removed Shaun Agar 6th Earl Normanton (age 29) succeeded 9th Baron Mendip of Mendip in Somerset.

On 29 May 1988 Sheriden Frederick Terence Hamilton-Temple-Blackwood 5th Marquess of Dufferin and Ava (age 49) died. Marquess of Dufferin and Ava, Earl of Ava in County Down and Burma, Earl of Dufferin in County Down, Viscount Dufferin of Claneboye in County Down, Baron Claneboye of Claneboye in County Down, Baronet Blackwood of Killyleagh in County Down extinct. His fourth cousin once removed Francis George Blackwood 10th Baron Dufferin and Clandeboye (age 72) succeeded 10th Baron Dufferin and Claneboye of Ballyleidy and Killyleagh in County Down.