The remains of Neil Vickers, 40, were discovered following a blaze at the caravan in a field in Rodeheath on Sunday, April 15.
Police said a murder investigation had been launched after it emerged the fire had been started deliberately.
A spokeswoman for Cheshire Constabulary said two men, aged 29 and 37, are helping police with inquiries.
Mr Vickers worked as a labourer at a nearby garage and lived alone in the caravan.
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