Viscount Mountmorres

It was created on 29 June 1763 for Hervey Morres, 1st Baron Mountmorres, who had previously represented St Canice in the Irish House of Commons.

However, he was succeeded in the baronetcy of Knockagh by his distant relative, Hervey de Montmorency, the sixteenth Baronet.

He was the son of James Edward Geoffrey de Montmorency, Quain Professor of Comparative Law at the University of London.

This line of the family failed on the death of his son, the seventh Baronet, who died childless in 1758.

William Browne de Montmorency, 5th Viscount Mountmorres (1838–1880) graduated from Trinity College, Dublin, with honors.

After marrying Harriet Broadrick of Hamphall Stubbs, Yorkshire, in 1862, Mountmorres used her dowry to purchase Ebor Hall on Tumneenaun Bay, Lough Corrib, Galway.

Various motives for his murder include his unwillingness to decrease rents for his tenants by the requested thirty percent—he had agreed to a twenty percent reduction.

[2] But the most credible reason for his assassination was that it was believed Mountmorres was a spy for Dublin Castle, the symbol of British oppression in Ireland, and was killed on the orders of a secret society then operating in Clonbur.

"The most likely suspects emerged during testimony before a special Parliamentary commission investigating [Charles Stewart] Parnellism and Crime in 1888 in London.

"[3] Further Information on the murder of William Browne de Montmorecy Clonbur, County Galway Pg 332-333