Another daughter Mary Montgomery married Sir Robert McClellan of Bomby, Scotland, (knighted by James VI of Scotland (James I of England); created by Charles I, in 1629 a Baronet and in 1633 a peer with the title of Lord Kircudbright.
In 1605 For their parts in helping Conn O'Neill escape from Carrickfergus Castle and in his getting a Royal Pardon, Montgomery and Hamilton each received one third of O'Neill's Upper Clandeboye and Ards lands.
It mentions William Montgomery (1633-1707) grandson of the above 1st Viscount Montgomery of the Ards, Hugh Montgomery.William had two essays published at Leyden in 1652 the University which "Robin Adair" and perhaps his father attended. The Scottish migration to Ireland was initiated by the granting of land to two Scottish families - Hugh Montgomery 6th Laird of Braidstone, Ayr, and Sir James Hamilton from Lanark.
Another article mentioned that on the 10 May 1605 Mrs. Montgomery was the wife of the first Protestant bishop of Derry.
A good reference to Robert Cunningham, Hugh Montgomery and Hamilton is at :