Owen's family controlled the parliamentary seat of Pembroke Boroughs and had a strong interest in Pembrokeshire. They were moderate and independent Whigs. At the
1695 English general election he was returned unopposed as
Member of Parliament for
Pembrokeshire in succession to his father. In 1697 Owen was
Captain of the troop of
Pembrokeshire Militia Horse. He was returned again at the
1698 English general election. His only contest was in the first election of 1701 when he won by 426 to 5 votes. He was returned unopposed again at the second general election of 1701, and at the
1702 English general election. He stood aside for his brother at the
1705 English general election and instead was Mayor of Pembroke in 1705, 1706 and 1707 in which period he increased the number of councilmen and burgesses. As a result he was returned unopposed as MP for
Pembroke Boroughs at the
1708 British general election. He was a teller for the Whigs voted for the naturalization of the Palatines in 1709, and for the impeachment of
Henry Sacheverell in 1710. At the
1710 British general election Owen stood for both Pembrokeshire, where he was defeated by the Tory John Barlow, and for Pembroke Boroughs, where he was victorious until unseated on petition on 23 February 1712. In 1715 Owen was appointed
Lord Lieutenant of Pembrokeshire and regained his seat as a Whig MP for Pembrokeshire at the
1715 general election. He was appointed
Vice-Admiral of North Wales in 1716. He was returned at Pembrokeshire in
1722 but lost the seat at the
1727 general election and did not stand for Parliament again. ==Death and legacy==