About Francis Hamilton, 1st Baronet Hamilton
"Francis Hamilton of Killaugh, co Down, was 1st son and heir of Sir Claud Hamilton, of Clonyn, otherwise Tagleagh, co Cavan (patent 23 June 1610), by Jane, daughter of Robert Lauder of the Bass [S], which Claud (who died v.p. before February 1618) was 2nd son of Sir Alexander Hamilton of Enderwick, in Scotland, and (patent 23 June 1610) of Clonkine and Carrotubber, co Cavan. He and his widowed mother were made denizens of Ireland by patent 12 February 1618. He received from his said grandfather, 20 July 1621, the Cavan estates; was P.C. [I] as one of the Council of Munster to James I, and created a Baronet [S], 29 September, sealed 10 October 1628, with rem. to heirs male whatsoever, and with a grant of, presumably, 16,000 acres in Nova Scotia of which he had seizin in November 1628. The three estates of Clonkine, Carrotubber, and Clonyn were (patent 17 June 1631) formed into the manor of Castle Killagh afterwards called Castle Hamilton), co Cavan. He was M.P. [I] for Jamestown, 1639-48, and for co Cavan, 1661-66; was Custos Rot. for that county, and a Commissioner for the Act of Settlement, 1661. He married firstly Laetitia or Nicola, daughter of Sir Charles Coote, 1st Baronet [I 1620], by Dorothea, daughter and coheir of Hugh Cuffe of Cuffeswood, co Cork. He married secondly, Elizabeth, widow (his 3rd wife)of Sir Francis Willoughby, Dep. Lieut. Gov. of Galway (who died 19 February 1658/9, aged 84), formerly widow of William Hay of Castlebarne, co Longford (who died March 1634/5), only daughter of Randall Barlow, Archbishop of Tuam (1629-38), by his 1st wife Elizabeth, daughter of Jonas Wheller, Bishop of Ossory (1613-40). She died s.p. 19 May, and was buried, 1 June 1664, in Christ Church, Dublin. He died 1673."
SOURCE: Complete baronetage; Cokayne, George E. (George Edward); 1900; Vol. II; page 360-361