Duke Leinster
Duke Leinster is in Duke Ireland.
In 1766 James Fitzgerald 1st Duke Leinster (age 44) was created 1st Duke Leinster. Emilia Mary Lennox Duchess Leinster (age 34) by marriage Duchess Leinster.
On 19 Nov 1773 James Fitzgerald 1st Duke Leinster (age 51) died. His son William Robert Fitzgerald 2nd Duke Leinster (age 24) succeeded 2nd Duke Leinster.
On 04 Nov 1775 or 07 Nov 1775 William Robert Fitzgerald 2nd Duke Leinster (age 26) and Emilia St George Duchess Leinster were married. She by marriage Duchess Leinster. He the son of James Fitzgerald 1st Duke Leinster and Emilia Mary Lennox Duchess Leinster (age 44). He a great x 2 grandson of King Charles II of England Scotland and Ireland.
On 20 Oct 1804 William Robert Fitzgerald 2nd Duke Leinster (age 55) died at Carton House, Carton, Kildare, County Kildare. His son Augustus Fitzgerald 3rd Duke Leinster (age 13) succeeded 3rd Duke Leinster.
On 16 Jun 1816 Augustus Fitzgerald 3rd Duke Leinster (age 24) and Charlotte Augusta Stanhope Duchess Leinster (age 23) were married. She by marriage Duchess Leinster. She the daughter of Charles Stanhope 3rd Earl of Harrington (age 63) and Jane Fleming Countess Harrington (age 61). He the son of William Robert Fitzgerald 2nd Duke Leinster and Emilia St George Duchess Leinster. They were half fourth cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
On 10 Feb 1874 Augustus Fitzgerald 3rd Duke Leinster (age 82) died. His son Charles William Fitzgerald Fitzgerald 4th Duke Leinster (age 54) succeeded 4th Duke Leinster. Caroline Leveson-Gower Duchess Leinster (age 46) by marriage Duchess Leinster.
On 10 Feb 1887, coincidentally the same day his father died, 10 February, Charles William Fitzgerald Fitzgerald 4th Duke Leinster (age 67) died at Carton House, Carton, Kildare, County Kildare. His son Gerald Fitzgerald 5th Duke Leinster (age 35) succeeded 5th Duke Leinster. Hermione Wilhelmina Duncombe Duchess Leinster (age 22) by marriage Duchess Leinster.
On 01 Dec 1893 Gerald Fitzgerald 5th Duke Leinster (age 42) died of typhoid. His son Maurice Fitzgerald 6th Duke Leinster (age 6) succeeded 6th Duke Leinster.
On 04 Feb 1922 Maurice Fitzgerald 6th Duke Leinster (age 34) died having spent most of his life being cared for in a psychiatric institution at Edinburgh [Map]. His brother Edward Fitzgerald 7th Duke Leinster (age 29) succeeded 7th Duke Leinster.
On 11 Mar 1946 Edward Fitzgerald 7th Duke Leinster (age 53) and Jessie Smither aka Denise Orme Duchess Leinster (age 60) were married. She by marriage Duchess Leinster. He the son of Gerald Fitzgerald 5th Duke Leinster and Hermione Wilhelmina Duncombe Duchess Leinster.