Research Notes:
The History of Parliament biography of Walter Wittle states, [1]
Writtle (Wrytel), Walter (1425-1475); of White Roding and Hallingbury, Essex. Of the Exchequer 1455-72; customer 1461-8; Clarence's servant; lawyer. M.P. Maldon 1455-6; (? 1461-2, 1463-5); Essex 1467-8; (? 1470-1). 147205. Yorkist.
S. and h of Ralph or Robert Writtle and Elizabeth (Ramsey); m. (1) by 1458 Jane Hynde (dead 1462), da. and h of John, stepson of Ralph Butler, lord Sudeley, Treasurer, and (2) Catherine (d. 1493), da of Thomas Boston.
[1] Anne D. Holt and Josiah Clement Wedgwood, History of Parliament. Biographies of the Members of the Commons House, 1439–1509, Vol. 1 (London: HMSO, 1936-1938), 973, [GoogleBooks].