Blida (recorded as Blithe in some sources) was an Anglo-Saxon princess, known for being the mother of Saint Walstan, whose cult was celebrated during the Middle Ages in the English county of Norfolk.

[2] Following her death and burial at Martham, Norfolk, a chapel was dedicated in her honour, and bequests were made to her for over 400 years.

[5] The anonymous English Life gives Walstan's birthplace as "Blyborow town" or Blythburgh, Suffolk,[1] and relates that he was the son of a king; as a young prince he might suddenly return home, which would have threatened the contract established between himself and the farmer in Taverham.

[6] Blida was represented on a painted panel of a rood screen, formerly in the church of St James the Less, Pockthorpe in Norwich.

[7] The south aisle chapel at the parish church in Martham is a prayer corner dedicated to the saint, who may have been buried there in the 11th century,[8]