Mary Hallam was listed in the Sheffield directory (1774) as a lancet and phleme maker at Norfolk Street (trade mark ‘PARIS’).  She was likely a widow, who was continuing her husband’s business.  His identity is uncertain, though one candidate, Benjamin Hallam, was buried at St Paul’s churchyard on 29 August 1772.   Mary was listed at the same address in the next Sheffield directories in 1787 and 1797.  In 1787, she appeared alongside James Hallam as a lancet maker: both used variations of the ‘PARIS’ mark.  A search of the apprenticeship records of the Company of Cutlers reveals James Hallam, son of Benjamin, cutler, who was apprenticed to his father and became a Freeman in 1775.  Mary Hallam, ‘widow’, was buried at St Paul’s on 29 May 1798.  John Hallam, a lancet maker listed in the Sheffield directory in 1811, may have been a descendant.