Definitely needs checking
(1) Troqueer and Tongland are separate and therefore mutually exclusive parishes
(2) The recorded children of James Mitchell and Catherine McMeekin are Mary 1811, Hugh 1813, James 1815, Jean 1819, Isabella 1821, Andrew 1823 and Jean Carson 1825, all baptised in Tongland. No Samuel and no Elizabeth.
Wikitree also has Thomas 1817, John 1820, Elizabeth etc 1832 and Alexander 1833. Thomas 1817 would fit neatly into a gap, but there are less than two years between Jean's baptism on 28 March 1819 and Isabella's on 2 March 1821, so there is only a very small window to fit John into.
Though there are an Elizabeth and an Alexander in the Wikitree, their birth dates of 1832 and 1833, with Catherine's DoB of 1787, mean that she was 45 and 46 when they were born. Not impossible but any birth with mother's age over 45 is open to question.
There's a tree on GENI with very similar information, including saying that James' parents were Hugh Mitchell and Isabella Thomson. Clearly either one or both of Wikitree and Geni must be wrong, though at least Geni has a plausible pair of names.
Though it introduces some interesting errors. For example, it says that Tongland is in Kincardineshire (it's actually in Kirkcudbrightshire, about as far apart as you can get and still be in Scotland). It also says that Tongland is 'near Kircudbright [sic], Dumfries-shire', which is just plain wrong. It has Hugh born in Aberdeenshire, and John in 'Dumfries and Galloway' which was a local authority region not created until 1975 - a mere 155 years after he was born.
I also note with interest that both Wikitree and Geni say that Elizabeth Agnes Maitland Mitchell died in 1912. Wikitree doesn't know where, but has a link to the New South Wales BMD web site. Geni says in Bundarra, New South Wales. There is a death of Elizabeth A M Rowlandson, father's name James, no mother listed, in Bundarra in 1912.
