A Lord Pembroke is mentioned in letter 4254 but no more information is given about him.
Reference:
Thomas Cooke to Hans Sloane, 1731-03-29, Sloane MS 4051, ff. 215-216, British Library, London.
Domenico Ferrari (d. 1744) practiced law in Naples before traveling to England, where he met Sir Thomas Coke, Earl of Leicester. He converted to Anglicanism and worked as Leicester’s librarian until his death in 1744. Ferrari was elected a Fellow of the Royal Society in 1723.
Reference:
Domenico Ferrari to Hans Sloane, 1731-08-12, Sloane MS 4051, ff. 300-301, British Library, London.
Domenico Ferrari, Fellow Details, The Royal Society, [https://collections.royalsociety.org/DServe.exe?dsqIni=Dserve.ini&dsqApp=Archive&dsqCmd=Show.tcl&dsqDb=Persons&dsqPos=0&dsqSearch=%28Surname%3D%27ferrari%27%29, accessed 23/08/17]
Jaques Levi wrote letter 4307 to Sloane. No other information is available about him.
Reference:
Jacques Levi to Hans Sloane, 1733-06-30, Sloane MS 4053, f.1, British Library, London.
Paul Gottlieb Werlhof wrote letter 4308 to Sloane. No other information is known about him.
Reference:
Paul Gottlieb Werlhof to Hans Sloane, 1733-07-11, Sloane MS 4053, f. 7, British Library, London.
A. Anderson wrote Sloane letter 4319 and was a member of The Society for Promoting Christian Knowledge. Nothing else is known about them.
Reference:
A. Anderson to Hans Sloane, 1731-08-21, Sloane MS 4051, ff. 310-314, British Library, London.
Abraham Vandenhoeck was a German publisher and bookseller who founded the still-running Göttingen publishing house Vandenhoeck & Ruprecht.
References:
Abraham Vandenhoeck to Hans Sloane, Unknown Date, Sloane MS 4053, f. 21, British Library, London.
Abraham Vandenhoeck, Wikipedia, [https://de.wikipedia.org/wiki/Abraham_Vandenhoeck, accessed 20/09/17]
Pl. Dicconson wrote letter 4330 to Sloane. Nothing else is known about them.
Reference:
Pl. Dicconson to Hans Sloane, 1733-08-24, Sloane MS 4053, f. 25, British Library, London.
Rev. Edmund Burnell wrote letter 4333 to Sloane but the letter is faded and difficult to read so there is no more information available.
Reference:
Edmund Burnell to Hans Sloane, 1733-11-07, Sloane MS 4053, f. 73, British Library, London.
G. Medley wrote letter 4373 to Sloane to offer him his greatest appreciation.
Reference:
G. Medley to Hans Sloane, 1731-08-31, Sloane MS 4052, f. 3, British Library, London
Jacob Theodor Klein, 1685 – 1759, was a German jurist, historian, botanist, zoologist, mathematician and diplomat in service of Polish King August II. He was also a member of the Royal Society and the Danzig Research Society.
Reference:
Jacob Theodor Klein to Hans Sloane, 1734-11-10, Sloane MS 4053, f. 310, British Library, London
Jacob Theodor Klein, Wikipedia, [https://en.wikipedia.org/wiki/Jacob_Theodor_Klein, accessed 24/08/17]