St. Waldetrudis (d. 688) is one of the beloved saints of the Catholic Church. St. Waldetrudis, also known as Waudru, was a 7th-century Frankish noblewoman who founded the convent that became the nucleus of the city of Mons in Belgium. She was married to St. Vincent Madelgarius, and all four of their children are also venerated as saints. The Church celebrates St. Waldetrudis's feast on 04-09.
Catholic Daily brings you the life of St. Waldetrudis as part of our commitment to helping Catholics encounter the saints of the liturgical calendar every morning. Whether you are discovering St. Waldetrudis for the first time or deepening a long-standing devotion, this page offers biography, prayers, and practical guidance for honoring this holy patron in your daily life.
Early Life and Calling of St. Waldetrudis
St. Waldetrudis, also known as Waudru, was a 7th-century Frankish noblewoman who founded the convent that became the nucleus of the city of Mons in Belgium. She was married to St. Vincent Madelgarius, and all four of their children are also venerated as saints. After her husband entered a monastery, she embraced religious life herself, becoming a noted figure of devotion and charity.
The vocation of St. Waldetrudis reminds us that holiness is not the exclusive domain of monks and nuns but the universal call of every baptized Christian. The Second Vatican Council's Dogmatic Constitution Lumen Gentium teaches that all the faithful are called to the fullness of Christian life and the perfection of charity — and St. Waldetrudis's life is a shining example of that universal call answered with total generosity.
Patron Saint: Mons, Belgium
St. Waldetrudis is honored as the patron saint of Mons, Belgium. The designation of patron saints is a beautiful expression of the Catholic doctrine of the Communion of Saints — the belief that the saints in heaven are not distant figures from the past but active intercessors who accompany us in our earthly journey.
Those who work in or are associated with Mons have traditionally invoked St. Waldetrudis's intercession for protection, guidance, and grace in their particular circumstances. The patronage of St. Waldetrudis is grounded in the specific details of Waldetrudis's life and ministry, which created a lasting bond between this saint and those who share similar callings or needs.
How to Honor St. Waldetrudis in Your Daily Life
The Church's tradition offers many beautiful ways to honor St. Waldetrudis and seek Waldetrudis's intercession:
On the Feast Day (04-09): Attend Mass if possible, as the liturgy on Waldetrudis's feast day will often include readings and prayers that illuminate Waldetrudis's particular sanctity. Light a candle before an image of St. Waldetrudis and spend a few minutes in prayer.
Daily Devotion: Place an image or icon of St. Waldetrudis in your home — in your prayer corner, on your desk, or in your car. A simple morning invocation, "St. Waldetrudis, pray for us," draws Waldetrudis's intercession into your day.
Novena: A nine-day novena to St. Waldetrudis can be prayed before the feast day (beginning nine days prior) or at any time of particular need. Many Catholics have reported profound graces through novena prayer.
Study: Read a biography of St. Waldetrudis. The lives of the saints are the living commentary on the Gospel — they show us what it looks like to follow Christ in a particular time, culture, and vocation.
Prayer to St. Waldetrudis
O glorious St. Waldetrudis, whose life was a testament to the love and power of Almighty God, look upon us with mercy from your place before His throne. You who walked the path of holiness with courage and fidelity, intercede for us who struggle in the pilgrimage of faith. Obtain for us from God the graces we most need — especially [state your intention here] — and help us to follow your example of love, courage, and total surrender to God's will. We ask this through Christ our Lord. Amen.
Feast Day Prayer (from the Roman Missal):Lord our God, you have given us St. Waldetrudis as a witness to your goodness and mercy. May we who honor Waldetrudis's memory imitate Waldetrudis's virtues and one day share Waldetrudis's joy in your presence. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, God, for ever and ever. Amen.
St. Waldetrudis in Art and Catholic Tradition
St. Waldetrudis has been depicted in Catholic sacred art for centuries. Traditional iconography of the saints communicates theological truths through visual symbols — a language that transcends words and speaks directly to the heart.
Common symbols associated with St. Waldetrudis in Catholic art may include:
- A halo or nimbus, indicating canonized sainthood
- Specific objects or instruments associated with Waldetrudis's life or martyrdom
- Liturgical vestments corresponding to Waldetrudis's state of life (religious habit, episcopal robes, or lay clothing)
- A palm branch, if St. Waldetrudis is a martyr
A lesser-known fact about St. Waldetrudis: The collegiate church of Sainte-Waudru in Mons, built in her honor, remains one of the finest Gothic churches in Belgium, and her relics are paraded through the city every year in a golden carriage.
When praying before an image of St. Waldetrudis, allow the symbols to draw your attention to the virtues they represent. Sacred art is not decoration but theology made visible — a window through which the heavenly reality shines into our earthly prayer.