famous McCarty-Mason duel over a century later--an event that so profoundly stirred the country and cost the life of one of the most prominent and beloved citizens of the Loudoun of that day.[18] [17] Journal Cork Historical and Genealogical Society, 2nd Series, Vol. II, p. 213. [18] Captain Daniel's descent is given in _The McCarthys in Early American History_, by Michael J. O'Brien, who corrects Hayden's assumption that Daniel was the son of Dennis of Lynn Haven, Lower Norfolk. Also see Chapter XIV. Francis Aubrey became a large purchaser of Loudoun land soon after the Iroquois evacuation, first obtaining a grant at the mouth of Broad Run about 1725. Among the tracts he later acquired was a grant of about 962 acres purchased on the 19th December, 1728 from Lord Fairfax on or near which later he built a home and lived. Nothing of this early house has survived; but we know that it was near the "Big Spring" then as now a conspicuous landmark on the old Carolina Road and about two miles north of the present Leesburg. Probably "the Chappel above Goose Creek" of the Truro Vestry books, the Chapel of Ease or convenient neighbourhood church, the building of which was supervised by him for the Parish, was immediately adjacent to his home and the location of that structure, the first church edifice of any kind to be erected within the bounds of present Loudoun, is known within a fair degree of accuracy and in 1926 with appropriate ceremonies, was marked with a stone monument.[19] [19] Aubrey's house is shewn on Robert Brooke's survey (1737) of the Potomac River below the Shenandoah. Original of survey is in Enoch Pratt Library, Baltimore; photostat copy is in Library of Congress.