Hamilton Knox Grogan Morgan

Hamilton Knox Grogan Morgan (1807 – 9 June 1854), known as Hamilton Knox Grogan until 1828, was an Irish Whig, Repeal Association and Conservative politician.

He married Sophia Maria Rowe, daughter of Ebenezer Radford Rowe, with whom he had three children: Elizabeth, Sophia and Jane Colclough Morgan (died 1872).

After unsuccessfully contesting the seat as a Conservative in 1841, Morgan was elected Repeal Association MP for at the 1847 general election. He held the seat until 1852 when he sought election as a Whig but was defeated.

He was a member of the Reform Club. Hamilton and Sophia were largely responsible for construction of Johnstown Castle, County Wexford.