Our friend the Emperor shews his knowledge of statecraft. Doubtless he continued to find plausible reasons for holding on to Conoy where he and his people complacently continued to remain until after the Spotswood-Iroquois Treaty of 1722 which had such a broad effect on Loudoun and which we shall presently consider. During this long occupation of the island, the Piscataways finished building and occupied their fort and village and to this day evidence of their tenure, in arrowheads and other objects, is still, from time to time, discovered. The journey of Harrison and his companion Vandercastel is important to Loudoun not only because it resulted in the first known description of any of the topography of what is now that county, but also because it marks the first definitely known white exploration of the locality above the Sugarland Run and while unknown English hunters may have theretofore penetrated some part of Loudoun's wilderness, these men were, it is believed, the first whites _named and recorded_ who ever trod Loudoun's soil above the Sugarland. Vandercastel's connection with our story then ends; but Burr Harrison became the progenitor of one of the most prominent and respected families of the county which has now been identified with its best life for five generations. He had been baptized in St. Margaret's, Westminster, in 1637 and came with his father Cuthbert Harrison of Ancaster, Yorkshire, to Virginia some time prior to 1669 when Burr, with others, patented land on Asmale Creek near Occoquan. Afterward, but before 1679, he acquired land on the Chipawansic, presumably from Gerrard Broadhurst. Therefore, to distinguish him and his descendants from the other numerous and not necessarily related Virginia Harrisons, he and they were thenceforward usually known as the Harrisons of Chipawansic. It was not, however, until 1811 that Burr Harrison's descendants in the male line took up their permanent residence in Loudoun; in that year the widow of his great-great-grandson Mathew Harrison moved with her children to Morrisworth, an estate seven miles southeast of Leesburg, now the home of Mr. and Mrs. Thomas Fendall, which had come to her from her family the Ellzeys of Dumfries, and there she continued to live until her death.