Sir John Frederick was an English merchant, MP and Lord Mayor of London

Lord Mayor of London

The Right Honourable Lord Mayor of London is the legal title for the Mayor of the City of London Corporation. The Lord Mayor of London is to be distinguished from the Mayor of London; the former is an officer only of the City of London, while the Mayor of London is the Mayor of Greater London and...

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Frederick was a city of London merchant and a member of the Worshipful Company of Barber-Surgeons

Worshipful Company of Barbers

The Worshipful Company of Barbers is one of the Livery Companies of the City of London. The organisation's records date as early as 1308, recording Richard le Barber as the first to hold the office of Master....

. On 22 September 1653, he was elected an alderman of the City of London for Vintry ward. In 1654, he was Master of the Barber-Surgeons company and elected Sheriff of London for 1655 to 1656. From 1657 to 1658 he was a member of the Committee of the East India Company. In 1658 he was Master of the Barber-Surgeons company again.

In 1660, Frederick was elected Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Dartmouth

Dartmouth (UK Parliament constituency)

Dartmouth, also at some times called Clifton, Dartmouth and Hardness, was a parliamentary borough in Devon which elected two Members of Parliament to the House of Commons in 1298 and to the Commons of England, Great Britain, and the United Kingdom from 1351 until 1832, and then one member from...

 in the Convention Parliament. He was knighted on 26 June 1660. He was a member of the Committee of the East India Company from 1660 to 1661. In 1661, he was elected alderman for Coleman Street, remaining as an alderman until his death. He translated to the Worshipful Company of Grocers

Worshipful Company of Grocers

The Worshipful Company of Grocers is one of the 108 Livery Companies of the City of London. It is ranked second in the order of precedence of the Companies and, having been established in 1345, is one of the original Great Twelve City Livery Companies....

 on 3 October 1661 and was elected the same year as Lord Mayor of London

Lord Mayor of London

The Right Honourable Lord Mayor of London is the legal title for the Mayor of the City of London Corporation. The Lord Mayor of London is to be distinguished from the Mayor of London; the former is an officer only of the City of London, while the Mayor of London is the Mayor of Greater London and...

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Frederick became president of Christ's Hospital in 1662 and held the post until his death. In 1663 he was elected MP for City of London

City of London (UK Parliament constituency)

The City of London was a United Kingdom Parliamentary constituency. It was a constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1950.-Boundaries and boundary...

 in the Cavalier Parliament

Cavalier Parliament

The Cavalier Parliament of England lasted from 8 May 1661 until 24 January 1679. It was the longest English Parliament, enduring for nearly 18 years of the quarter century reign of Charles II of England...

and sat until 1679. He was Master of the Grocers Company from 1677 to 1678.

Frederick died at the age of 83 and was buried on 19 March 1685.