 Each of the four citties extended across the James River, the major thoroughfare of commerce for the settlers, and included land on both the north and south shores.With the incentives of 1619, many new developments, known as "hundreds" were established.About this same time, downriver from Jamestown, in the southeastern end of what is now James City County near present-day Grove, a fortified settlement known as Wolstenholme Towne was established near the river and just east of the confluence of Grove Creek on a land grant known as Martin's Hundred.