Viscount Dillon of Costello Gallen in Mayo is in Viscount Ireland.
In 1621 Theobald Dillon 1st Viscount Dillon [aged 64] was created 1st Viscount Dillon of Costello Gallen in Mayo.
On 15th March 1624 Theobald Dillon 1st Viscount Dillon [aged 67] died. His grandson Lucas [aged 14] succeeded 2nd Viscount Dillon of Costello Gallen in Mayo.
In 1625 Lucas Dillon 2nd Viscount Dillon [aged 15] and Mary MacDonnell Viscountess Dillon were married. She by marriage Viscountess Dillon of Costello Gallen in Mayo. She the daughter of Randal "Arranach" Macdonnell 1st Earl Antrim and Alice O'Neill Countess Antrim.
In or before July 1629 Lucas Dillon 2nd Viscount Dillon [aged 19] died. In July 1629 His son Theobald succeeded posthumously 3rd Viscount Dillon of Costello Gallen in Mayo.
On 13th May 1630 Theobald Dillon 3rd Viscount Dillon died. His uncle Thomas [aged 15] succeeded 4th Viscount Dillon of Costello Gallen in Mayo.
In 1672 Thomas Dillon 4th Viscount Dillon [aged 57] died. His son Thomas succeeded 5th Viscount Dillon of Costello Gallen in Mayo.
In 1674 Thomas Dillon 5th Viscount Dillon died. His first cousin Lucas succeeded 6th Viscount Dillon of Costello Gallen in Mayo.
In September 1682 Lucas Dillon 6th Viscount Dillon died. His second cousin Theobald succeeded 7th Viscount Dillon of Costello Gallen in Mayo.
In 1694 Henry Dillon 8th Viscount Dillon was restored 8th Viscount Dillon of Costello Gallen in Mayo. Frances Hamilton Viscountess Dillon by marriage Viscountess Dillon of Costello Gallen in Mayo.
In 1713 Henry Dillon 8th Viscount Dillon died. His son Richard succeeded 9th Viscount Dillon of Costello Gallen in Mayo.
In 1737 Richard Dillon 9th Viscount Dillon died. His first cousin Charles succeeded 10th Viscount Dillon of Costello Gallen in Mayo. Frances Dillon Viscountess Dillon by marriage Viscountess Dillon of Costello Gallen in Mayo.
In 1741 Charles Dillon 10th Viscount Dillon died. His brother Henry [aged 36] succeeded 11th Viscount Dillon of Costello Gallen in Mayo. Charlotte Lee Viscountess Dillon [aged 17] by marriage Viscountess Dillon of Costello Gallen in Mayo.
In 1787 Henry Dillon 11th Viscount Dillon [aged 82] died. In 1787 His son Charles [aged 41] succeeded 12th Viscount Dillon of Costello Gallen in Mayo.
On 9th November 1813 Charles Dillon Lee 12th Viscount Dillon [aged 68] died. His son Henry [aged 36] succeeded 13th Viscount Dillon of Costello Gallen in Mayo.
On 24th July 1832 Henry Augustus Dillon Lee 13th Viscount Dillon [aged 54] died. His son Charles [aged 22] succeeded 14th Viscount Dillon of Costello Gallen in Mayo.
Monument to Henry Augustus Dillon Lee 13th Viscount Dillon and Henrietta Browne, sister of Dominick, daughter of Dominick-Geoffrey Browne in All Saints Church, Spelsbury [Map]. Sculpted by Thomas Gaffin [aged 52].
Henry Augustus Dillon Lee 13th Viscount Dillon: On 28th October 1777 he was born to Charles Dillon Lee 12th Viscount Dillon and Henrietta Maria Phipps at Brussels [Map]. He a great x 3 grandson of King James II of England Scotland and Ireland. On 9th November 1813 Charles Dillon Lee 12th Viscount Dillon died. His son Henry succeeded 13th Viscount Dillon of Costello Gallen in Mayo.
Charles Henry Dillon 14th Viscount Dillon: On 20th April 1810 he was born to Henry Augustus Dillon Lee 13th Viscount Dillon at Dublin [Map]. He a great x 4 grandson of King James II of England Scotland and Ireland.
On 18th November 1865 Charles Henry Dillon 14th Viscount Dillon [aged 55] died. His brother Theobald [aged 54] succeeded 15th Viscount Dillon of Costello Gallen in Mayo.
Monument to Charles Henry Dillon 14th Viscount Dillon in All Saints Church, Spelsbury [Map] sculpted by Charles Francis Fuller [aged 36].
Theobald Dominick Dillon 15th Viscount Dillon: In 1811 he was born to Henry Augustus Dillon Lee 13th Viscount Dillon. He a great x 4 grandson of King James II of England Scotland and Ireland. On 30th November 1879 he died. His brother Arthur succeeded 16th Viscount Dillon of Costello Gallen in Mayo.
On 30th November 1879 Theobald Dominick Dillon 15th Viscount Dillon [aged 68] died. His brother Arthur [aged 67] succeeded 16th Viscount Dillon of Costello Gallen in Mayo.
In 1892 Arthur Edmund Denis Dillon 16th Viscount Dillon [aged 80] died at Ditchley Park, Oxfordshire [Map]. His son Harold [aged 47] succeeded 17th Viscount Dillon of Costello Gallen in Mayo. Julia Stanton Viscountess Dillon by marriage Viscountess Dillon of Costello Gallen in Mayo.
On 15th June 1926 Harold Arthur Lee Dillon 17th Viscount Dillon [aged 82] and Margaret Louisa Everard ffolkes Viscountess Dillon were married. She by marriage Viscountess Dillon of Costello Gallen in Mayo.
On 18th December 1932 Harold Arthur Lee Dillon 17th Viscount Dillon [aged 88] died. His nephew Arthur [aged 57] succeeded 18th Viscount Dillon of Costello Gallen in Mayo. Hilda Brunner Viscountess Dillon [aged 58] by marriage Viscountess Dillon of Costello Gallen in Mayo.
On 25th May 1934 Arthur Henry Dillon 18th Viscount Dillon [aged 59] died. His brother Eric [aged 53] succeeded 19th Viscount Dillon of Costello Gallen in Mayo. Nora Juanita Muriel Beckett Viscountess Dillon by marriage Viscountess Dillon of Costello Gallen in Mayo.
On 6th April 1946 Brigadier Eric FitzGerald Dillon 19th Viscount Dillon [aged 65] died. His son Michael [aged 34] succeeded 20th Viscount Dillon of Costello Gallen in Mayo. Irène Marie France Merandon du Plessis Viscountess Dillon by marriage Viscountess Dillon of Costello Gallen in Mayo.
On 30th November 1979 Lieutenant-Colonel Michael Eric Dillon 20th Viscount Dillon [aged 68] died. His son Charles [aged 34] succeeded 21st Viscount Dillon of Costello Gallen in Mayo.
On 15th September 1982 Charles Henry Robert Dillon 21st Viscount Dillon [aged 37] died. His son Henry [aged 9] succeeded 22nd Viscount Dillon of Costello Gallen in Mayo.