First party: Morton, Robert de. Second party: Tyas, Margaret; Bylyngeye, John de, knight (deceased); You, Thomas. Taking place at or regarding Slaghtwat (Huddersfield, Slaithwaite), Yorkshire, West Riding. Robert de Morton gave power of attorney to Thomas You to deliver seisin to Margaret, the daughter of John Tyes, and formerly the wife of John de Billyngeie, knight