Bertha (539-c. 612) became the queen of Kent following her marriage to King Ethelberht of Kent. She was canonized as a saint because of her influence in establishing Christianity in Anglo-Saxon England. She established St Martin's as her private chapel. St Martin's is credited as the oldest church in the English-speaking world.
This is a copy negative produced from OP25151.
Source: Historic England Archive
Early Medieval Tomb, Early Medieval Church