Sir Stephen Janssen, 4th Baronet

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Sir Stephen Theodore Janssen, 4th Baronet (died 7 April 1777) was an English Member of Parliament and Lord Mayor of London. [1]

He was the 4th son of Sir Theodore Janssen, 1st Baronet and the younger brother of Sir Abraham Janssen, 2nd Baronet. He succeeded his other elder brother Sir Henry Janssen, 3rd Baronet to the baronetcy in 1766.

He was a London stationer and master of the Stationer's Company from 1749 to 1751. He was elected an Alderman of the city of London in 1749 (until 1765), Sheriff of the City of London for 1749–50 and Lord Mayor of London for 1754–55.

He was also the Member of Parliament for London from 1747 to 1754 and Chamberlain of London from 1765 to 1776. In 1749 he was appointed one of the Trustees for the Establishment of the Colony of Georgia in America.

He died in 1777. He had married in 1750, Catherine, the daughter of Col. Peter Soulėgre of Antigua, and had a daughter, Henrietta, but no sons. The baronetcy thereby became extinct on his death. Henrietta married Lorenzo Moore (MP for Dungannon).


  1. ^ "JANSSEN, Stephen Theodore (d.1777), of St. Paul's Churchyard, London". History of Parliament Trust. Retrieved 4 March 2019.
Civic offices
Preceded by
Thomas Rawlinson
Lord Mayor of London
Succeeded by
Slingsby Bethell
Baronetage of the United Kingdom
Preceded by
Sir Henry Janssen, 3rd Baronet
(of Wimbledon)
Succeeded by