On 7th February 1745 Luke Gardiner 1st Viscount Mountjoy was born to Charles Gardiner [aged 34].
In 1769 [his father] Charles Gardiner [aged 57] died.
Around 1773. Joshua Reynolds [aged 49]. Portrait of Luke Gardiner 1st Viscount Mountjoy [aged 27].
1773. Joshua Reynolds [aged 49]. "Irish Graces" or "Three Ladies Adorning a Term of Hymen". Portrait of three elder Montgomery sisters [his future sister-in-law] Barbara Montgomery [aged 20], [his future wife] Elizabeth Montgomery [aged 22] and Anne Montgomery Marchioness Townshend [aged 21]. They are shown decorating a statue of Hymen, the Greek god of marriage and fertility, with flowers. The painting was commissioned by Luke Gardiner 1st Viscount Mountjoy [aged 27]
Barbara Montgomery: In 1753 she was born to William Montgomery 1st Baronet and Hannah Tomkyns. In 1774 John Beresford and she were married. He the son of Marcus Beresford 1st Earl Tyrone and Catherine Power Countess Tyrone. In 1788 she died.
Elizabeth Montgomery: In 1751 she was born to William Montgomery 1st Baronet and Hannah Tomkyns. On 3rd July 1773 Luke Gardiner 1st Viscount Mountjoy and she were married. In 1783 she died.
On 3rd July 1773 Luke Gardiner 1st Viscount Mountjoy [aged 28] and Elizabeth Montgomery [aged 22] were married.
In 1782 [his son] Charles John Gardiner 1st Earl Blessington was born to Luke Gardiner 1st Viscount Mountjoy [aged 36] and [his wife] Elizabeth Montgomery [aged 31]. He married 16th February 1818 Marguerite Power Countess of Blessington and had issue.
In 1783 [his wife] Elizabeth Montgomery [aged 32] died.
On 19th September 1789 Luke Gardiner 1st Viscount Mountjoy [aged 44] was created 1st Baron Mountjoy.
On 20th October 1793 Luke Gardiner 1st Viscount Mountjoy [aged 48] and Margaret Wallis [aged 23] were married. The difference in their ages was 24 years.
Jean de Waurin's Chronicle of England Volume 6 Books 3-6: The Wars of the Roses
Jean de Waurin was a French Chronicler, from the Artois region, who was born around 1400, and died around 1474. Waurin’s Chronicle of England, Volume 6, covering the period 1450 to 1471, from which we have selected and translated Chapters relating to the Wars of the Roses, provides a vivid, original, contemporary description of key events some of which he witnessed first-hand, some of which he was told by the key people involved with whom Waurin had a personal relationship.
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On 30th September 1795 Luke Gardiner 1st Viscount Mountjoy [aged 50] was created 1st Viscount Mountjoy. His paternal grandmother Anne Stewart was a daughter of the William Stewart 1st Viscount Mountjoy whose title became extinct in 1769 with the death of his grandson William Stewart 1st Earl of Blessington.
On 4th February 1796 [his daughter] Margaret Gardiner was born to Luke Gardiner 1st Viscount Mountjoy [aged 50] and [his wife] Margaret Wallis [aged 26]. She married 15th June 1822 John Hely-Hutchinson 3rd Earl of Donoughmore and had issue.
On 5th June 1798 the Battle of New Ross was fought at New Ross between the Irish Republican insurgents called the United Irishmen and British Crown forces composed of regular soldiers, militia and yeomanry. The attack on the town of New Ross on the River Barrow, was an attempt by the recently victorious rebels to break out of county Wexford across the river Barrow and to spread the rebellion into county Kilkenny and the outlying province of Munster.
Luke Gardiner 1st Viscount Mountjoy [aged 53] was killed. His son Charles [aged 16] succeeded 2nd Viscount Mountjoy, 2nd Baron Mountjoy.
Kings Wessex: Great x 21 Grand Son of King Edmund "Ironside" I of England
Kings Scotland: Great x 18 Grand Son of King David I of Scotland
Kings France: Great x 22 Grand Son of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 26 Grand Son of Ranulf I Duke Aquitaine
Grandfather: Luke Gardiner
Father: Charles Gardiner 17 x Great Grandson of King David I of Scotland
Great x 4 Grandfather: Archibald Stewart 2nd of Culgruff and Fintalloch 
12 x Great Grandson of King David I of Scotland
Great x 3 Grandfather: William Stewart 1st Baronet 13 x Great Grandson of King David I of Scotland
Great x 2 Grandfather: Alexander Stewart 2nd Baronet 14 x Great Grandson of King David I of Scotland
Great x 1 Grandfather: William Stewart 1st Viscount Mountjoy 15 x Great Grandson of King David I of Scotland
Grandmother: Anne Stewart 16 x Great Granddaughter of King David I of Scotland
Luke Gardiner 1st Viscount Mountjoy 18 x Great Grandson of King David I of Scotland