In 1614, Wentworth ventured into English Parliament as the representative of Yorkshire in the ‘Addled Parliament.’ However, it was in 1621 parliament that he sat for similar constituency and participated in debate. He did not empathize with the famous party’s eagerness for battle with Spain, supported by James I’s Buckingham’s duke, who was the top advisor and favorite.
However, James’ rejection of parliament’s rights and privileges appear to have led him to take part in refuting the allegations of House of Commons and he was in support of the declaration that suspended James’ third parliament.
The first wife of Wentworth died in 1622. Friends state that he mourned her death greatly; however, in February 1625 he got married to Arabella Holles. She was John Holles’ daughter, who was Earl of Clare. This marriage was in overall, thought to be a mutual, genuine love affair.
In 1624 he was a representative of Pontefract in Happy Parliament. However, it seems like he was not an active participant. He showed a desire to keep away from foreign problems and ‘first conduct commonwealth business.’
In June 1625 during Chares I’st first parliament, once more, Yorkshire was represented by Wentworth, who displayed his opposition to the planned war with Spain. He did this by sustaining a motion for a postponement before the house started to engage in business.
He protested the request for war funding made on behalf of Buckingham following the demise of James I. To Charles, Buckingham was the first minister following Parliament’s dissolution in November when he became Yorkshire’s High Sheriff. This position separated him from the parliament that converged in 1626.
However, he at no time portrayed a demeanor of aggression to the King. His stance differed greatly from the one of standard opposition. He was eager to be of service to the Crown; however, he was not in agreement with the policy of the King.
Wentworth requested for Council of the North’s presidency in 1626 and Buckingham received him well. However, following parliament’s dissolution he was discharged from justiceship of the peace and Yorkshire’s and Yorkshire’s custos rotulorum.
He stayed here from 1615, possibly as he failed to cooperate with the court to compel the state to donate cash without donation from parliament. In 1627 he declined to donate to the compulsory loan; as a result, he was jailed.