Agnes Maltby

East Flegg Hundred: Maltby, or Mawtby "Sir John de Mauteby, lord in the 5th of Richard II. and in 1396, Sir John de Mauteby and Agnes his wife enfeoffed Sir Adam Clifton in his manors of Mauteby, Winterton, East Somerton, &c. for the use of John, his eldest son, &c. in tail." [https://www.british-history.ac.uk/topographical-hist-norfolk/vol11/...]

Source? In 1396 Sir John de Mauteby and Agnes his wife enfeoffed Sir Adam Clifton in his manors of Mauteby, Winterton, East Somerton, &c., for the use of John, his [Sir Adam's] eldest son &c in tail [entailed]. It is unknown exactly what relationship this Sir Adam was to Agnes de Mauteby.

Mawbey Family Tree [http://mawbey.com/index.php/rootspersona-tree/mautby-sir-john/]