MRCS 1822; LSA 1822.
Lacy studied medicine at St George's Hospital, London. He was surgeon to the Stockport Infirmary and Fever Wards and to the Queen's Lying-In Institution, Manchester. Lacy applied in 1830 and 1833 for the position of surgeon at MRI but was in both instances unsuccessful. In 1835 Lacy was giving lectures on midwifery and the diseases of women and children in King Street, Manchester. He later moved to Poole, Dorset, where he settled in general practice and was honorary surgeon to Bournemouth General Dispensary. In 1832 John Doherty, the publisher of The poor man's advocate, was found guilty of libel for alleging that the body of a Mr Perry had been stolen from the graveyard of St Thomas's Church, Stockport, with the knowledge of Reverend Martin Gilpin, and had been conveyed to the dissecting room of E. Lacy, a practitioner in Manchester and the brother-in-law of Gilpin.