Maybe one of these is the right Thomas son of Thomas.
Thomas Aitken
Son
England and Wales Census, 1891
birth: 1889 Scotland
residence: 1891 Newton, Lancashire, England
father: Thomas Aitken
mother: Mary A Aitken
other: Mary Aitken, Robert Aitken, Elizabeth Aitken, Sarah A Allen
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
christening: 22 December 1724 , STRANRAER, WIGTOWN, SCOTLAND
residence: Stranraer, Wigtownshire, Scotland
father: Thomas Aitken
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
birth: 23 May 1762
christening: 10 June 1762 , NEWLANDS, PEEBLES, SCOTLAND
residence: 1762 Newlands, Peebleshire, Scotland
father: Thomas Aitken
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
christening: 22 December 1724 STRANRAER, WIGTOWN, SCOTLAND
father: Thomas Aitken
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
christening: 5 October 1662 KILBARCHAN, RENFREW, SCOTLAND
father: Thomas Aitken
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
christening: 26 April 1715 , DUNBAR, EAST LOTHIAN, SCOTLAND
residence: Dunbar, East Lothian, Scotland
father: Thomas Aitken
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
christening: 10 June 1762 , NEWLANDS, PEEBLES, SCOTLAND
father: Thomas Aitken
Thomas Aitken
Scotland Births and Baptisms, 1564-1950
birth: 6 January 1857 DOUGLAS, LANARK, SCOTLAND
mother: Mary Anne Aitken
Tom Aitken
Son
England and Wales Census, 1901
birth: 1886 Scotland
residence: 31 March 1901 Carlisle Botchergate, Cumberland, England
mother: Annie Aitken
other: John Aitken, Williamina Aitken, Alexander Aitken, Agnes Aitken, Maggie Aitken