Polly Washington must be Mary Townshend Washington, who apparently continued at Mount Vernon after her father and the rest of her party left on 1 Mar. General musters of county militias during this period were held once a year in March or April. Because GW was a county magistrate and held no rank in the Fairfax militia, he was exempt by law from attending its musters (hening description begins William Waller Hening, ed. The Statutes at Large; Being a Collection of All the Laws of Virginia, from the First Session of the Legislature, in the Year 1619. 13 vols. 1819–23. Reprint. Charlottesville, Va., 1969. description ends , 7:534, 8:242–45). He probably went to Cameron today to see friends or to conduct some business (General Ledger A description begins General Ledger A, 1750–1772. Library of Congress, George Washington Papers, Series 5, Financial Papers. description ends , folio 314).