Earl Donegal is in Earl Ireland.
In 1647 Arthur Chichester 1st Earl Donegal [aged 40] was created 1st Earl Donegal. Mary Digby Countess Donegal 1612-1648 [aged 35] by marriage Countess Donegal.
On 13th August 1651 Arthur Chichester 1st Earl Donegal [aged 45] and Letitia Hicks Countess Donegal 1626-1691 [aged 25] were married. She by marriage Countess Donegal. The difference in their ages was 20 years.
On 18th March 1675 Arthur Chichester 1st Earl Donegal [aged 68] died. He was buried at St Nicholas' Church, Carrickfergus, County Antrim. His succeeded nephew Arthur succeeded 2nd Earl Donegal, 3rd Viscount Chichester of Carrickfergus, 4th Baron Chichester of Belfast. Jane Ichyngham Countess Donegall by marriage Countess Donegal.
On 26th October 1678 Arthur Chichester 2nd Earl Donegal -1678 died. His succeeded son Arthur [aged 12] succeeded 3rd Earl Donegal. Barbara Boyle Countess Donegall 1662-1682 [aged 16] by marriage Countess Donegal.
On 10th April 1706 Arthur Chichester 3rd Earl Donegal [aged 40] was killed in action at Fort Montjuïc, Barcelona. His succeeded son Arthur [aged 11] succeeded 4th Earl Donegal.
In 1757 Arthur Chichester 4th Earl Donegal 1695-1757 [aged 62] died. His succeeded nephew Arthur [aged 17] succeeded 5th Earl Donegal.
On 11th September 1761 Arthur Chichester 1st Marquess Donegal [aged 22] and Anne Hamilton Countess Donegal 1738-1780 [aged 23] were married. She by marriage Countess Donegal. She the daughter of James Hamilton 5th Duke Hamilton 2nd Duke Brandon and Anne Spencer Duchess Hamilton Duchess Brandon 1710-1771 [aged 51].
On 5th January 1799 Arthur Chichester 1st Marquess Donegal [aged 59] died. His succeeded son George [aged 29] succeeded 2nd Marquess Donegal, 6th Earl Donegal, 2nd Baron Fisherwick of Fisherwick in Staffordshire.