Between 1821 and 1869 the earls also held the title Baron Kingston, of Mitchelstown in the County of Cork (created in 1821), in the Peerage of the United Kingdom.

[citation needed] He was succeeded by his son, John, the second Baronet, who also represented County Roscommon and Boyle in the Irish Parliament.

[citation needed] Henry was succeeded by his eldest son, Robert, the fourth Baronet, who sat as Member of Parliament for Boyle.

[citation needed] Lord Kingsborough was succeeded in the baronetcy by his younger brother, Edward, the fifth Baronet, who represented Boyle and County Sligo in the Irish Parliament.

In 1764 Edward was raised to the Peerage of Ireland as Baron Kingston, of Rockingham in the County of Roscommon, a revival of the barony held by his kinsmen which had become extinct three years earlier.

[citation needed] He was succeeded by his son, Robert, the second Earl, who represented County Cork in the Irish House of Commons.

Some detail is known about the lives of the second Earl and his wife, as they hired the pioneer educator and proto-feminist Mary Wollstonecraft as governess to their daughters.

Her books Thoughts on the Education of Daughters and Original Stories from Real Life draw on her experiences under their roof at Mitchelstown Castle.

[citation needed] In 1821 he was created Baron Kingston, of Mitchelstown in the County of Cork, in the Peerage of the United Kingdom,[7] which gave him and his descendants an automatic seat in the House of Lords.

Lord Kingsborough predeceased his father, unmarried,[citation needed] and the earldom devolved on his younger brother, Robert, the fourth Earl.

[citation needed] He was succeeded by his elder son, Robert, the seventh Earl, who died two years later at the age of forty, without any male issue.

[citation needed] The Honourable James William King, younger son of the second Earl, was a rear-admiral in the Royal Navy.

Abandoned by the family in early 19th c. Rockingham, Boyle, County Roscommon built in 1810 by John Nash for Robert King, younger son of 2nd.