Bertha of Kent

Bertha or Aldeberge (c. 565 – d. in or after 601) was a Frankish princess who became queen of Kent. She enabled the 597 Gregorian mission, led by Augustine, which resulted in the conversion to Christianity of Anglo-Saxon England.

Life Bertha was a Frankish princess, the daughter of Charibert I and his wife Ingoberga, granddaughter of the reigning King Chlothar I and great-granddaughter of Clovis I and Clotilde. Her father died in 567, her mother in 589. Bertha had been raised near Tours. Her marriage to the pagan Æthelberht of Kent, in 580, was on condition that she be allowed to practise her religion. She brought her chaplain, Liudhard, with her to England. A former Roman church was restored for Bertha just outside Canterbury and dedicated to Martin of Tours. It was the private chapel of Queen Bertha before Augustine arrived from Rome. The present St Martin's Church, Canterbury continues on the same site, incorporating Roman walling of the original church in the chancel. It is acknowledged by UNESCO as the oldest church in the English-speaking world where Christian worship has taken place continuously since 580. St Martin's (with Canterbury Cathedral and St Augustine's Abbey) make up Canterbury's UNESCO World Heritage Site.

Pope Gregory I requested that Bertha convert her husband to Christianity and upbraided her for not doing so. When Gregory decided to send a mission led by Augustine to restore Christianity to England in 596, the Pope requested that Bertha incline her husband's heart to give a favourable reception. Augustine was supposed to move on but upon arrival in 597 he decided to found the Abbey of St Peter and Paul on land granted by Æthelberht. Without her support and Æthelberht's good will, monastic settlements and the cathedral would likely have been developed elsewhere. In 601, Pope Gregory addressed a letter to Bertha, in which he complimented her highly on her faith and knowledge of letters.

The date of her death (possibly 606) is disputed.

There is a wooden statue of Bertha in St Martin's Church.