A. John Seyncler, son and heir of Thomas Seyncler, Knt., of St. Osyth [co. Essex]; 12 July, 11 Hen. IV. [1410]. Vellum. Lately used as the cover of a MS. (v. Add. 36,234). Thorrington, Essex: Bequest of land in: 1410. Tendring, Essex: Bequest of land in: 1410. Sheppey, Kent: Bequest of land i...