Sir John Stepney, 3rd Baronet (1618ca. 1676) was a Welsh politician who sat in the House of Commons

House of Commons of England

The House of Commons of England was the lower house of the Parliament of England from its development in the 14th century to the union of England and Scotland in 1707, when it was replaced by the House of Commons of Great Britain...

  from 1640 to 1643. He supported the Royalist side in the English Civil War

English Civil War

The English Civil War was a series of armed conflicts and political machinations between Parliamentarians and Royalists...

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Stepney was the son of Sir John Stepney, 1st Baronet, and his wife Jane Mansel, daughter of Sir Francis Mansel of Muddlescomb, Carmarthenshire

Carmarthenshire

Carmarthenshire is a unitary authority in the south west of Wales and one of thirteen historic counties. It is the 3rd largest in Wales. Its three largest towns are Llanelli, Carmarthen and Ammanford...

. He succeeded to the baronetcy

Stepney Baronets

The Stepney Baronetcy, of Prendergast in the County of Pembroke, was a title in the Baronetage of England. It was created on 24 November 1621 for John Stepney. His son, Sir John, the third Baronet represented Pembroke and Haverfordwest in Parliament. The latter's nephew, the fourth Baronet, married...

 on the death of his brother Alban in 1628. In 1637 he was High Sheriff of Pembrokeshire

High Sheriff of Pembrokeshire

This is a list of High Sheriffs of Pembrokeshire. Under the Local Government Act 1888, an elected county council was set up to take over the functions of the Pembrokeshire Quarter Sessions...

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In April 1640, Stepney 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 Pembroke

Pembroke (UK Parliament constituency)

Pembroke was a parliamentary constituency centred on the town of Pembroke in West Wales. It returned one Member of Parliament to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post system.-History:For the creation and early history of the seat, see...

  in the Short Parliament

Short Parliament

The Short Parliament was a Parliament of England that sat from 13 April to 5 May 1640 during the reign of King Charles I of England, so called because it lasted only three weeks....

. He was elected MP for Haverfordwest

Haverfordwest (UK Parliament constituency)

Haverfordwest was a parliamentary constituency. It returned one Member of Parliament to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post system.- History :...

 for the Long Parliament

Long Parliament

The Long Parliament was made on 3 November 1640, following the Bishops' Wars. It received its name from the fact that through an Act of Parliament, it could only be dissolved with the agreement of the members, and those members did not agree to its dissolution until after the English Civil War and...

in November 1640 and held the seat until he was disabled from sitting in 1643. He remained loyal to the king and was governor of the town of Haverfordwest during the Civil War. He was captured by the Parliamentary forces at Hereford on 18 December 1645 and imprisoned. He compounded on 2 March 1646 and was fined £1230 on 23 December 1646. This was reduced to £550 on 1 Oct 1649 and he was discharged on 31 May 1650.

Stepney married Magdalen Jones, daughter of Sir Henry Jones of Abermarlais.