I am stumped! It doesn't look like any town, village or parish that springs to mind in the county of Angus (I cannot bear to write it as 'incorrectly' as it is in the original. Angus is, by definition, a county, so the compound version is tautological and grates on my sensibilities

).
The best place to
look for their marriage is the International Genealogical Index; it is a superb finding aid, but it is an
index, not a primary source. The best place to
find it is Scotland's People
www.scotlandspeople.gov.uk, which is the only place where you can view and download a digital image of the original document.
The only marriage in the IGI that fits the bill is John Galletly to Margaret Binny Webster, which is recorded in both Forfar and Kirriemuir on 9 July 1837. There are also marriages of John Gellatlys to Margaret Howell in 1815, Margaret Robertson in 1829 and Margaret Christie in 1845.
You may be able to eliminate Margaret Binny Webster because she had at least two children in Scotland, David in 1841 and Betsy in 1849.