There's some info on the IGI. I don't know how much you have, if any.
James Kego m. Jean Mitchell June or July 1765 (there's 2 entries one in Carmunnock in July, 1 in Eaglesham in June. I've seen that before but I'm not sure exactly what it means.
Did Isabella marry Thomas Cuthbertson? 20th Sep 1819, Eaglesham. That's the only marriage coming up on the IGI of the right date range.
If so this looks to be her family in 1841
Piece: SCT1841/561 Place: Eaglesham -Renfrewshire Enumeration District: 5
Civil Parish: Eaglesham Ecclesiastical Parish, Village or Island: -
Folio: 5 Page: 10
Address: Eaglesham, Montgomery Sq
________________________________________
CUTHBERTSON Thomas M 40 Cotton Hand Loom Weaver Renfrewshire
CUTHBERTSON Isabel F 40 Cotton Hand Loom Weaver Renfrewshire
CUTHBERTSON Thomas M 15 Cotton Hand Loom Weaver Renfrewshire
CUTHBERTSON Agnes F 14 Cotton Hand Loom Weaver Renfrewshire
CUTHBERTSON John M 12 Renfrewshire
CUTHBERTSON Robert M 10 Renfrewshire
CUTHBERTSON Archibald M 1 Renfrewshire
Page: 5/11 MACLAUGLEN Robert M 15 Cotton Hand Loom Weaver Renfrewshire
I'm having trouble finding them in 1851.
The children's births are all on the IGI
James 9 Jul 1820
Thomas 1 Dec 1822
Agnes 12 Mar 1825
Margaret 7 Oct 1827
John Young 12 Dec 1830
Robert 30 Jun 1833
Isabel 21 Feb 1836
Archibald 19 Nov 1837 + another 1 March 1840
William 24 June 1842
Lora