He was the son of Edward Jacob, surgeon of
Canterbury, mayor of that city in 1727, who died in 1756. He was apprenticed to his father on a surgical apprenticeship in 1728. On completion of this in 1735 he was made a
freeman of the city of Canterbury and moved to
Faversham in Kent in that same year, where he practised as a surgeon. Jacob was an antiquary, bibliophile, scientist, botanist and fossil collector. He wrote a number of papers and books. 1774 saw his
Plantae Favershemiensis appear, 1777 his
History of the Town and Port of Faversham. He also re-published the anonymous 16th century play
Arden of Faversham, and was the first person to suggest that
Shakespeare had a hand in writing it. He was elected to the Society of Antiquaries in 1755. He was mayor of Faversham on four occasions, namely, 1749, 1754, 1765 and 1775. His practice must have flourished, for he acquired three estates in Kent. • the manor of
Nutts in
Leysdown in the
Isle of Sheppey was bought in 1752, • the manor of
Cades in
Ospringe next Faversham in 1757 • the manor of
Nackington alias Sextries in Canterbury in 1763. ==Family==