There’s a great book entitled Married Saints and Blesseds by Ferdinand Holböck (published by Ignatius Press) which includes biographies of the following married saints and many others:
Sts. Mary and Joseph
Sts. Anne and Joachim (Mary’s parents)
Sts. Elizabeth and Zechariah (John the Baptist’s parents)
St. Monica (Augustine’s mother)
St. Elizabeth of Hungary
St. Louis IX
St. Elizabeth of Portugal
St. Bridget of Sweden
St. Rita of Cascia
St. Frances of Rome
St. Catherine of Genoa
St. Thomas More
St. Jane Frances de Chantal
Louis and Zélie Martin (parents of St. Thérèse of Lisieux — not beatified yet, but getting close?)
St. Gianna Beretta Molla
Any of these should be good prayer partners for married couples.
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