John William Foster of Rosy Park, was an Irish

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 volunteer and politician.

He was the son of John Foster of Dunleer

John Foster of Dunleer

John Foster of Dunleer was elected member to the Irish House of Commons for the constituency of Dunleer, in County Louth. He formerly held the position of Mayor of Dunleer Corporation....

, MP for Dunleer and Elizabeth, née Fortescue. Foster was appointed High Sheriff of Louth

High Sheriff of Louth

The High Sheriff of Louth was the Crown's representative for County Louth, a territory known as his bailiwick. Selected from three nominated people, he holds his office over the duration of a year. He has judicial, ceremonial and administrative functions and executes High Court Writs.-History:The...

 for 1776 and then elected member to the Irish House of Commons

Irish House of Commons

The Irish House of Commons was the lower house of the Parliament of Ireland, that existed from 1297 until 1800. The upper house was the House of Lords...

 for Dunleer

Dunleer (Parliament of Ireland constituency)

Dunleer was a constituency represented in the Irish House of Commons to 1801.-History:In the Patriot Parliament of 1689 summoned by King James II, Dunleer was not represented.-1692–1801:...

 in 1783 and held this seat until 1790. He was the grandson of John and Elizabeth, née Fortescue his parents where William Foster and Patience Fowke who married in 1743.

Foster married 1788, Rebecca, only child of Hamilton McClure,. Esq., of Dublin, and died 1809.

He was ancestor of the Foster family of Ballymascanlon

Ballymascanlon

Ballymascanlan , otherwise Ballymascanlon, is a small village and townland in County Louth, Ireland, situated 4 km north-east of Dundalk on the road to Carlingford.-History:...

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