sentences:  The couple had nine daughters ranging in age from six to twenty-seven in 1799, and the marriages of four of those daughters had extended the family to other farms within and outside the Mount Vernon estate and produced three grandchildren.Children were born into slavery, their ownership determined by the ownership of their mothers.The value attached to the birth of a slave child, if it was noted at all, is indicated in the weekly report of one overseer, which stated, "Increase 9 Lambs & 1 male child of Lynnas."