Many years have passed since you posted your message but I thought that you might like to know what I have on my family tree.Most of the information recently obtained.
William Aitken and Euphemia Guthrie married Feb 9 1802 in Canongate, Edinburgh
My grandfather believed that they had 14 children but I have so far only identified 12 of them.
Isabella b 1803 d 1882 Currie, Midlothian Thomasb 1804St Cuthbert's Edinburgh Johnb 1809Dunsyred 1874 Newton, Midlothian Robertb 1812Walstond 1891 Campbelltown, Argyll Janeb 1813no information Jeanb 1815Carnwathno information Agnes b 1817Carnwathno information Jamesb 1819Carnwathno information Williamb 1822Carnwathd after 1891 but before 1901 Marionb 1824Carnwathno information Alexander Guthrie b 1825Carnwathd 1906 Innerleithen, Peebles Euphemia Guthrieb 1828Carnwathd 1919 Galashiels
My GGGrandfather was Alexander Guthrie Aitken.
I have been working on the ancestors of William Aitken and Euphemia Guthrie and have made some progress.If you have access to Ancestry.co.uk you will find details on the Russell Christison tree