Osyth was an English saint. She was the daughter of Frithwald, a sub-king of Mercia in Surrey. She grew up with nuns in Aylesbury. Later she decided to become a nun. But at the insistence of her parents, she promised to marry Sighere, king of Essex.
Sighere, who was passionate about hunting, often went to the forest with his entourage to hunt wild animals after marriage. Osyth took the opportunity to meet with the bishop. When Sighere returned from the hunt, he was sad not to see the bride. However, when he realized all the facts, he allowed Osyth to do as she pleased. Later after the death of Sighere, she established a convent at Chich, in Essex. There she led a quiet life, performing penance with a few nuns.
The monastery was located in a dangerous place. It was once attacked by pirates. The robbers tried to kidnap Osyth. Despite Osyth’s strong resistance, there was no escape. They beheaded her. The body was brought by Christians to Aylesbury and later to Chich and buried there.