A Dictionary of the Booksellers and Printers who Were at Work in England, Scotland and Ireland from 1641 to 1667/Heldersham (Francis)
HELDERSHAM (FRANCIS), bookseller (?) in London, 1649. Only known from a warrant granted by the Council of State on July 13th, 1649, to Serjeant Dendy to apprehend Francis Heldersham and Martha Harrison, for printing and publishing a seditious libel called Pragmaticus. The actual printing was done by William Ellis, q.v. [Calendar of State Papers, 1649-50, p. 541.]