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Fastingong

ˈFastingong Obs.
  Forms: 4–6 fastyngong(e, (5 fastyngon), 5 fastyngange. Also, corruptly, 6 festigam.
  [f. fast n.1 + ingong, ingang; cf. ON. fǫstu-inngangr.]
  = Shrove Tuesday. Also Fastingong Eve, Fastingong Tuesday.

1389 in Eng. Gilds (1870) 69 Y⊇ sonneday next after Fastyngonge. c 1442 in Blomefield Hist. Norfolk II. 111 John Gladman..on Tuesday in the last ende of Cristemesse viz. Fastyngonge Tuesday made a Disport with hys Neyghbours..coronned as Kyng of Crestemesse. c 1470 Harding Chron. ccxxxvii. ii, Southward came thei..vpon the fastyngange eue. 1477 Sir J. Paston in Lett. No. 786 III. 174 Wretyn at London..the Fryday a for Fastyngong. 1530 Palsgr. 804/1 At Fastyngonge, a Quaresme prennant.

  Hence Fastingong Sunday = Shrove Sunday.

1450 Paston Lett. No. 78 I. 110 All the tenawntes ben chargyd to pay al her rent..be Fastyngong Sonday. 1541 R. Barnes Workes (1573) 222/2 The Thurseday before Festigam Sonday.

Oxford English Dictionary

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