Saint Library
June 5early_medievalRoman

Boniface of Mainz

Archbishop

Lifec. 675 ADJune 5, 754 ADCrediton, Devon, Wessex, EnglandWynfrithApostle of the GermansGermanyNetherlandsbrewers

"In her voyage across the ocean of this world, the Church is like a great ship being pounded by the waves of life's different stresses. Our duty is not to abandon ship but to keep her on her course."

Boniface of Mainz, born Wynfrith around 675 in Crediton, Devon, organized the Church across pagan Germanic lands and most famously felled Donar's Oak at Geismar, building a chapel from its timbers. At nearly eighty, he returned to Frisia for a final mission and was martyred near Dokkum on June 5, 754, holding a Gospel book pierced by a sword.

Boniface of Mainz
Their Story

Life & Times

Early Life

Born Wynfrith around 675 in Crediton, Devon, he entered Benedictine life as a boy and burned to evangelize the pagan Germanic peoples across the sea.

Turning Point

Around 723, Boniface strode up to the sacred Donar's Oak at Geismar and felled it with an axe. When Thor did not strike him dead, local pagans converted in great numbers.

Legacy

Organized the German Church diocese by diocese, reformed the Frankish Church through five synods between 740 and 747, founded Fulda in 744, and crowned Pepin III in 752. At nearly eighty he returned to Frisia and was martyred there on June 5, 754.

Key Moments
1 / 9
c. 675
c. 675

Born in Wessex

Born Wynfrith in Crediton, Devon, into a noble Anglo-Saxon family; entered Benedictine monastic life as a young boy, receiving a rigorous Latin and theological education.

705
705

Ordained Priest

Ordained to the priesthood; compiled the first Latin grammar written in England, demonstrating scholarly gifts that distinguished him among the English clergy.

716
716

First Mission to Frisia

Made his first missionary journey to Frisia, but war between Radbod of Frisia and Charles Martel made evangelization impossible, forcing him to abandon the effort.

719
719

Papal Commission in Rome

Pope Gregory II received him in Rome, renamed him Boniface — 'doer of good' — and appointed him apostolic legate to the Germanic peoples, giving his mission direct papal authority.

722
722

Consecrated Bishop

Pope Gregory II ordained Boniface to the episcopate in Rome, formally establishing his authority to govern and ordain clergy in the Germanic mission territories.

c. 723
c. 723

Fells Donar's Oak

Struck down the sacred oak of the Germanic thunder-god at Geismar; when no divine punishment came, local pagans converted in great numbers. He built a chapel from the wood of the fallen tree.

744
744

Founds Abbey of Fulda

Founded the Abbey of Fulda, entrusted to his disciple Sturmi; it grew into a major center of medieval German learning and piety, and today houses Boniface's remains beneath its high altar.

752
752

Crowns Pepin III

As papal legate, anointed and crowned Pepin III (Pepin the Short) king of the Franks — an act that secured the Carolingian-papal alliance and reshaped the political structure of Western Christendom.

754
754

Martyred at Dokkum

At nearly eighty years old, returned to Frisia for a final mission. On June 5, 754, he and more than fifty companions were killed by a pagan raiding party near Dokkum. He died holding a Gospel book, pierced by a sword.

c. 675

Historical Context

Wynfrith of Crediton — known to history as Boniface — was born around 675 in Devon into a noble Anglo-Saxon family and educated in Benedictine monasteries. Ordained around 705, he compiled the first Latin grammar written in England and earned a reputation as one of the sharpest scholars among the English clergy. Yet learning was never his destination: he sought the pagan peoples of the European continent. A first attempt at mission in Frisia in 716 collapsed when war between Radbod of Frisia and Charles Martel made the territory impassable to Christian evangelists. Boniface went instead to Rome, where Pope Gregory II received him in 719, gave him the name Boniface ('doer of good'), and commissioned him as apostolic legate to the Germanic peoples — a mandate that backed his every act with the authority of the Holy See. Gregory II consecrated him bishop in 722. Working across Hesse, Thuringia, and Bavaria, Boniface's most celebrated act came around 723 at Geismar, where he took an axe to Donar's Oak, a tree sacred to the Germanic thunder-god. He felled it without divine punishment, and the watching pagans converted in great numbers. From the oak's own timber he built a chapel, a gesture of visible conquest over the old religion. Pope Gregory III later elevated him to Archbishop with authority over all Germany beyond the Rhine. Boniface did not merely convert individuals — he built an institution. He founded dioceses across Bavaria and Hesse, reformed the Frankish Church through five synods between 740 and 747, and in 744 established the Abbey of Fulda under his disciple Sturmi. Fulda became a center of scholarship and piety and remains his burial place to this day. In 752, as papal legate, he anointed and crowned Pepin III king of the Franks, cementing a Carolingian-papal alliance that would define Western Christendom for generations. At nearly eighty, Boniface refused retirement. He returned to Frisia — the mission that had defeated him as a young man — to reach the pagans who remained unconverted. On June 5, 754, near Dokkum in what is now the Netherlands, a pagan raiding party fell on him and more than fifty companions. According to his biographers, he died holding a copy of the Gospels, which was found pierced by a sword — the image that has defined his iconography ever since. Pope Pius IX extended his feast to the universal Church in 1874. He is venerated as patron of Germany and the Netherlands.
Canonization: saint Wikipedia

Life Locations

Words & Wisdom

Let us stand fast in what is right and prepare our souls for trial.

Let us preach the whole of God's plan to the powerful and to the humble, to rich and to poor, to men of every rank and age, as far as God gives us the strength, in season and out of season.

document

Letters of Saint Boniface (Epistolae)

A substantial collection of over eighty surviving letters exchanged with popes, abbesses, kings, and clergy across Europe. They document the evangelization of Germany, the reform of the Frankish Church, and the pastoral challenges of an 8th-century missionary bishop — among the most valuable primary sources for early medieval history.

Read More
Prayers
"A traditional intercessory prayer invoking Boniface as patron of Germany and protector of the faithful, asking his intercession for missionary courage and steadfast faith."

O God, who caused the Bishop Saint Boniface to illumine many peoples with the light of the faith, and crowned him with the glory of martyrdom, grant, through his intercession, that we may hold fast to the faith he taught and boldly profess it by the witness of our lives. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, one God, for ever and ever. Amen.

AxeThe axe he used to fell Donar's Oak — the supreme symbol of his triumph over Germanic paganism
Gospel Book Pierced by a SwordThe open Gospel Boniface held as he was martyred; the sword through the book became his most distinctive iconographic image
Fallen OakThe Donar's Oak (Thor's sacred tree) at Geismar, whose felling catalyzed the conversion of the Germanic peoples
Bishop's MitreSymbol of his episcopal and archiepiscopal authority over the Germanic Church

Related Saints

Connections in the communion of saints