 About half a year later, on 2 December 1701, William rewarded Abercorn with the titles of Viscount Strabane and Baron Mountcastle, in the Peerage of Ireland.The first was an enhancement of his title of Baron of Strabane.He took his seat in the Irish House of Lords (as Viscount Strabane) on 21 September 1703, and in the Parliament of Scotland (as Earl of Abercorn) on 3 October 1706.