I have a few pages from the introduction of the VESTRY BOOK AND REGISTER OF ST. PETER'S PARISH by C. G. Chamberlayne for historical background on boundaries. Hope you find this helpful.....Judy Page xvi.....when in 1704 St. Peter's Parish was itself divided, the upper (or north-western) portion being established as St. Paul's Parish, the dividing line between the two parishes (Matadequin Creek), which in 1720 became also the dividing line between New Kent and the newly created County of Hanover, became St. Peter's north-west boundary line. Page xvii.....as illustrating an early developing and steadily increasing tendency in the Colony of Virginia, or, to be more specific, in that part of Tidewater Virginia lying between the James (including the Appomattox) and the Rappahannock, to make navigable streams, rather than the ridges between the streams, the boundary lines between county and county, and between parish and parish....................at first in every case the counties and parishes lay on both sides of a river (which served as a high road) and sloped up and out on each side to a ridge between it and the next county or parish, but later the counties and parishes are found lying between two rivers, each county or parish sloping up and in on both sides to a ridge, along which ran in most cases a road roughly paralleling the two rivers. Page xxi.....For the first twelve or thirteen years of its history St. Peter's Parish embraced territory on both sides of the Pamunkey........The inhabitants living north of the river were few in number.......it was necessary to provide some means by which they might easily get across the river to attend church, to appear at court, and to be present on occasions when the militia of the county were mustered. Accordingly the parish maintained a ferry, as was done by other parishes similarly circumstanced.