Source Information
Ancestry.com. History of the Earldoms of Strather, Monteith, and Airth [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.Original data: Nicolas, Nicholas Harris,. History of the Earldoms of Strather, Monteith, and Airth : with a report of the proceedings before the House of Lords on the claim of Robert Barclay Allardice, Esq. to the Earldom of Airth. London: W. Pickering : Stevens and Norton, 1842.
