Citations:disguised

	1485
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• 1485 – Thomas Malory. Le Morte Darthur, Book XIII, Chapter xvij, leaf 318v

  / & there he mette with syre launcelot and syr Percyuale but they knewe hym not / for he was newe desguysed /

  " […] and there he met with Sir Launcelot and Sir Percivale, but they knew him not, for he was new disguised."

(Galahad was newly knighted, so Lancelot and Percival didn't know his particular shield.)