By the th and th of William it was enacted that if any person should bring a certificate from the parish where he was last legally settled, subscribed by the church wardens and overseers of the poor, and allowed by two justices of the peace, that every other parish should be obliged to receive him; that he should not be removable merely upon account of his being likely to become chargeable, but only upon his becoming actually chargeable; and that then the parish which granted the certificate should be obliged to pay the expense both of his maintenance and of his removal.