According to Gerald of Wales (d. c.1220) she was a woman saint buried at Howden (Humberside) and venerated there. He calls her the sister of King Osred, but modern historians seem to know nothing of any sister of either Osred I (d. 716) or Osred II (d. 792). There is no known cult. Gerald asserts that a priest's mistress who sat on Osanna's tomb was immovably fixed until she had been severely punished.
Giraldus Cambrensis, Itinerary in Wales, bk. i, ch. ii; AA.SS. Iun. I (I695), p. 551.