Crab was born in Buckinghamshire in 1621. At the time of his birth his mother had an annual income of £20. As a young man, he began trying to find a wayto live a perfect life. In 1641 he ceased eating meat, dairy and eggs. He also chose to be celibate. At the outbreak of the English Civil War in 1642, he joined the Parliamentary Army under Oliver Cromwell. During one battle he received a serious head wound from a sword. During his time as a soldier, he was at one point sentenced to death by Cromwell. He was later sentenced to two years in prison by Parliament. Christopher Hill has suggested that Crab was involved with the Levellers in the late 1640s and was imprisoned as a result.
Career
After leavingthe military Crab moved to Chesham. There he began working as a haberdasher. He continued this work between 1649 and 1652. In 1652 he moved to Ickenham and lived as a hermit. Believing that profit was sinful, he gave away almost all of his possessions before moving. He built up a practice as a herbal doctor, advising his patients to avoid meat and alcohol. He was a popular doctor among the village women. However, he was accused of witchcraft by a clergyman, possibly due to prophecies he issued. He attempted to live modestly, wearing homemade sackcloth clothes. He moved to Bethnal Green in 1657. There he joined the Philadelphians, a group founded by John Pordage.
Views
He was an anti-sabbatarian. He did not observe Sunday as a non-working day, and was put in the stocks for it. He was a pacifist, and had radical views on the evils of property, the Church and universities. Crab ate a vegan diet from 1641 until his death in 1680. He initially included potatoes and carrots in his diet, but later gave them up in favour of a diet of mostly bran and turnips. Later in his life he ate only Rumex and grass, claiming to spend of 3/4 d. per week on food. Late in his life he added parsnips to his diet. He might be the inspiration for Lewis Carroll's The Mad Hatter.
Works
Crab wrote his autobiography while living in Ickenham.,
The English hermite, or, Wonder of this age.: Being a relation of the life of Roger Crab, living neer Uxbridg, taken from his own mouth, shewing his strange reserved and unparallel'd kind of life, who counteth it a sin against his body and soule to eate any sort of flesh, fish, or living creature, or to drinke any wine, ale, or beere. He can live with three farthings a week. His constant food is roots and hearbs, as cabbage, turneps, carrets, dock-leaves, and grasse; also bread and bran, without butter or cheese: his cloathing is sack-cloath. He left the Army, and kept a shop at Chesham, and hath now left off that, and sold a considerable estate to give to the poore, shewing his reasons from the Scripture, Mark. 10. 21. Jer. 35..
Dagons-Downfall; or, the Great idol digged up root and branch..
Gentle correction for the high flown backslider, or, A soft answer to turn away strife : being a general answer to some queries, and defamations thrown out by the furious spirit in some of the people called Quakers against the rationalls.
A tender salutation, or, The substance of a letter given forth by the Rationals, to the despised remnant and seed of God, in the people called Quakers.
A Reply to the Gentle Correction was made:
An answer to Roger Crabs printed paper to the Quakers. And likewise to his principles and doctrines, whose spirit is tried and found in the dark. Which is to be directed again to Roger Crab and his followers, who cryed up his paper; that they may learn wisdom to preserve them in innocency, in the power of God, in which there is no confusion. By George Salter..
