1739 - 40 Turin (between Oct. 1739 - Sept. 1740; Spence Letters, 421)
1771 A West Indian gentleman who was bringing James Byres's sketches to London (Thorpe letters MSS, 18 May 1771)
1773 Naples ('Messrs Palmer, Dickens [Francis Dickins?] and Whitbread have deliver'd Lord R's letter of Introduction'; SP 93/28, Hamilton, 19 Jan. 1773)
Probably also the Palmer received by the Duchess of Beaufort in Rome in May 1773, see Elizabeth, Duchess of Beaufort.
1775 Florence (Sept.), Rome (Dec.)
Palmer was noticed at Florence in September and at Rome in December, playing cards with Sir Horatio Mann, Sir John Lindsay, the 8th Duke of Hamilton and William Fawkener.1 He was presumably the Mr Palmer for whom Alexander Day was seeking rooms in Rome late in 1775,2 and was conceivably the John Palmer of Bath who corresponded in England with Ozias Humphry in 1779.3
1. Home letters MSS (4 Sep., 19 Dec. 1775). 2. Humphry corr.MSS, hu/2/16. 3. Ibid., hu/2/91 - 2.
1777 see Edmund Cradock-Hartopp
1778 Florence (28 May; Gazz.Tosc.)
1784 Rome (21 Apr.: dined with Parkinson and others; Parkinson jnl.MSS)
1785 Venice (between 27 Apr. - 9 May; Grey jnl.MSS 1)
1793 Genoa (18 Jan.: Dr Palmer, English 'chimico e Macchinista' received a gold medal from the Societa' Patria; Gazz.di Parma)