Cromwell Mortimer FRS (June 1702 – 7 January 1752) was a British physician, antiquary[1] and second secretary of the Royal Society from 1730 to 1752.
[2] Mortimer was the second son of John Mortimer of Topping Hall in Hatfield Peverel, Essex, and his third wife Elizabeth Sanders, daughter of Samuel Sanders.
[4] He married and had one son Hans Winthrop Mortimer who became Member of Parliament for Shaftesbury.
[5] Mortimer's medical practice developed in London after he was admitted to the College of Physicians in 1725.
[4] He was elected to membership in the Royal Society in 1728; and those signing that nomination letter were: Francis Clifton; Claudius Amyand (surgeon); Hans Sloane.