[1] Their feast day was celebrated on 30 September at Thorney and Deeping.
[2][3] The brothers Tancred and Torthred, with their sister Tova, lived at Thorney, Cambridgeshire,[4] at the time little more than a collection of hermit cells in the Fens, rather than a monastic institution.
The story of their martyrdom rests on the chronicle of Pseudo-Ingulf,[8] an often unreliable document which includes sources older than the 12th century.
[13] According to Pseudo-Ingulf he was martyred with many of his brother monks by pagan Danish raiders in 869.
[14] His feast day is sometimes celebrated on 9 April[15] or 10 April,[16] and there is some conjecture that Torthred (and possibly Tova) did not die in the 869 raids but instead lived his last years at Cerne in Dorset,[17] in a similar way to Eadwold of Cerne.