On 03 Feb 1732 Francis Seymour-Conway 1st Baron Conway (age 52) died at Lisburn, Antrim. His son Francis Seymour-Conway 1st Marquess Hertford (age 13) succeeded 2nd Baron Conway of Ragley in Warwickshire, 2nd Baron Conway of Killultagh in Antrim.

On 14 Jun 1794 Francis Seymour-Conway 1st Marquess Hertford (age 75) died. His son Francis Ingram Seymour-Conway 2nd Marquess Hertford (age 51) succeeded 2nd Marquess Hertford, 2nd Earl Hertford, 2nd Earl of Yarmouth, 2nd Viscount Beauchamp, 3rd Baron Conway of Ragley in Warwickshire, 3rd Baron Conway of Killultagh in Antrim. Isabella Anne Ingram Marchioness Hertford (age 35) by marriage Marchioness Hertford. The estate was worth £70000 a year, and included Ragley Hall Alcester, Sudbourne Hall, Sudbourne and estates in Ireland.

On 28 Jun 1822 Francis Ingram Seymour-Conway 2nd Marquess Hertford (age 79) died at Hertford aka Manchester House Manchester Square Marylebone. His son Francis Charles Seymour-Conway 3rd Marquess Hertford (age 45) succeeded 3rd Marquess Hertford, 3rd Earl Hertford, 3rd Earl of Yarmouth, 3rd Viscount Beauchamp, 4th Baron Conway of Ragley in Warwickshire, 4th Baron Conway of Killultagh in Antrim.

On 01 Mar 1842 Francis Charles Seymour-Conway 3rd Marquess Hertford (age 64) died. His son Richard Seymour-Conway 4th Marquess Hertford (age 42) succeeded 4th Marquess Hertford, 4th Earl Hertford, 4th Earl of Yarmouth, 4th Viscount Beauchamp, 5th Baron Conway of Ragley in Warwickshire, 5th Baron Conway of Killultagh in Antrim.

On 25 Aug 1870 Richard Seymour-Conway 4th Marquess Hertford (age 70) died in Paris [Map]. His second cousin Francis George Hugh Seymour-Conway 5th Marquess Hertford (age 58) succeeded 5th Marquess Hertford, 5th Earl Hertford, 5th Earl of Yarmouth, 5th Viscount Beauchamp, 6th Baron Conway of Ragley in Warwickshire, 6th Baron Conway of Killultagh in Antrim. Frances Elizabeth Anson Marchioness Hertford (age 60) by marriage Marchioness Hertford.

On 25 Jan 1884 Francis George Hugh Seymour-Conway 5th Marquess Hertford (age 71) died. His son Hugh de Grey Seymour-Conway 6th Marquess Hertford (age 40) succeeded 6th Marquess Hertford, 6th Earl Hertford, 6th Earl of Yarmouth, 6th Viscount Beauchamp, 7th Baron Conway of Ragley in Warwickshire, 7th Baron Conway of Killultagh in Antrim. Mary Hood Marchioness Hertford (age 37) by marriage Marchioness Hertford.

On 23 Mar 1912 Hugh de Grey Seymour-Conway 6th Marquess Hertford (age 68) died. On 23 Mar 1912 His son George Francis Alexander Seymour 7th Marquess Hertford (age 41) succeeded 7th Marquess Hertford, 7th Earl Hertford, 7th Earl of Yarmouth, 7th Viscount Beauchamp, 8th Baron Conway of Ragley in Warwickshire, 8th Baron Conway of Killultagh in Antrim.

In 1940 George Francis Alexander Seymour 7th Marquess Hertford (age 69) died. His nephew Hugh Seymour 8th Marquess Hertford (age 9) succeeded 8th Marquess Hertford, 8th Earl Hertford, 8th Earl of Yarmouth, 8th Viscount Beauchamp, 9th Baron Conway of Ragley in Warwickshire, 9th Baron Conway of Killultagh in Antrim.

On 26 Jun 1655 Edward Conway 2nd Viscount Conway (age 60) died in Lyon, France [Map]. His son Edward Conway 1st Earl Conway (age 32) succeeded 3rd Baron Conway of Ragley in Warwickshire.

On 11 Aug 1683 Edward Conway 1st Earl Conway (age 60) died. He was buried in the Church of the Holy Trinity Arrow [Map]. Earl Conway, Baron Conway of Ragley in Warwickshire extinct.

He bequeathed his estates to his cousin's son Popham Seymour-Conway (age 8) with the condition he should change his name to Seymour-Conway and adopt the Conway Arms.