While the Washingtons were in Westmoreland County, Jacky Custis became “much disorder’d by an intermitting fever, attended with billeous vomittings,” and Dr. Charles Mortimer of Fredericksburg was called to treat him. Jacky was soon better, but he remained so “very weak & low,” that “his Mamma” insisted on taking him to Mount Vernon until he was fully recovered (GW to Jonathan Boucher, 4 Sept. 1768, PU; blanton description begins Wyndham B. Blanton. Medicine in Virginia in the Eighteenth Century. Richmond, 1931. description ends , 358–59).