Saint Ida of Herzfeld (c. 770 – 4 September 825) was the widow of a Saxon duke who devoted her life to the poor following the death of her husband in 811.
[2] Her Life is sometimes quoted in support of the proposition that sexual congress within the institution of marriage reflects spiritual unities as well: Together they built the church of Herzfeld, Westphalia, sometimes recorded as Hirutveldun.
She was reportedly the mother of Warin, the abbot of Corvey from 826 to 856, Count Cobbo the Elder, and Addila or Mathilde, the abbess of Herzfeld.
In Herzfeld, the folk festival of "Ida Week" is held every year in September in memory of the saint.
[4] The Vita sanctae Idae Hertzfeldensis written in 980, by the monk Uffing of the Abbey of Werden, focuses on her exemplary life, including suffering endured in divine trust.