Marquess Lansdowne
Marquess Lansdowne is in Marquis and Marquess Ireland.
In 1784 William Petty 1st Marquess Lansdowne (age 46) was created 1st Marquess Lansdowne. Louisa Fitzpatrick Marchioness Lansdowne (age 29) by marriage Marchioness Lansdowne.
On 07 May 1805 William Petty 1st Marquess Lansdowne (age 68) died. His son John Petty 2nd Marquess Lansdowne (age 40) succeeded 2nd Marquess Lansdowne, 3rd Earl Shelburne in County Wexford.
On 15 Nov 1809 John Petty 2nd Marquess Lansdowne (age 44) died. His half brother Henry Petty-Fitzmaurice 3rd Marquess Lansdowne (age 29) succeeded 3rd Marquess Lansdowne, 4th Earl Shelburne in County Wexford. Louisa Fox-Strangways Marchioness Lansdowne by marriage Marchioness Lansdowne.
On 31 Jan 1863 Henry Petty-Fitzmaurice 3rd Marquess Lansdowne (age 82) died. His son Henry Thomas Petty-Fitzmaurice 4th Marquess Lansdowne (age 47) succeeded 4th Marquess Lansdowne, 5th Earl Shelburne in County Wexford, 5th Earl Kerry. Emily Jane de Flahaut Marchioness Lansdowne (age 43) by marriage Marchioness Lansdowne.
On 05 Jul 1866 Henry Thomas Petty-Fitzmaurice 4th Marquess Lansdowne (age 50) died. His son Henry Petty-Fitzmaurice 5th Marquess Lansdowne (age 21) succeeded 5th Marquess Lansdowne, 6th Earl Shelburne in County Wexford, 6th Earl Kerry.
In 1869 Henry Petty-Fitzmaurice 5th Marquess Lansdowne (age 23) and Maud Evelyn Hamilton Marchioness Lansdowne (age 19) were married. She by marriage Marchioness Lansdowne. She the daughter of James Hamilton 1st Duke Abercorn (age 57) and Louisa Jane Russell Duchess Abercorn (age 56). He the son of Henry Thomas Petty-Fitzmaurice 4th Marquess Lansdowne and Emily Jane de Flahaut Marchioness Lansdowne (age 49). They were fourth cousins. She a great x 4 granddaughter of King Charles II of England Scotland and Ireland. 
On 03 Jun 1927 Henry Petty-Fitzmaurice 5th Marquess Lansdowne (age 82) died. His son Henry Petty-Fitzmaurice 6th Marquess of Lansdowne (age 55) succeeded 6th Marquess Lansdowne, 7th Earl Shelburne in County Wexford, 7th Earl Kerry.
On 05 Mar 1936 Henry Petty-Fitzmaurice 6th Marquess of Lansdowne (age 64) died. His son Charles Petty-Fitzmaurice 7th Marquess of Lansdowne (age 19) succeeded 7th Marquess Lansdowne, 8th Earl Shelburne in County Wexford, 8th Earl Kerry.
On 30 Aug 1944 Charles Petty-Fitzmaurice 7th Marquess of Lansdowne (age 27) was killed in action. He was unmarried. His first cousin George Petty-Fitzmaurice 8th Marquess of Lansdowne (age 31) succeeded 8th Marquess Lansdowne, 9th Earl Shelburne in County Wexford, 9th Earl Kerry. His younger brother Lieutenant Edward Norman Petty-Fitzmaurice (deceased) had been killed nine days before.
On 25 Aug 1999 George Petty-Fitzmaurice 8th Marquess of Lansdowne (age 86) died. His son Charles Petty-Fitzmaurice 9th Marquess of Lansdowne (age 58) succeeded 9th Marquess Lansdowne, 10th Earl Shelburne in County Wexford, 10th Earl Kerry.