Whitby rose to prominence in Chester through the influence of his father, Robert, who was chosen clerk of the Pentice in 1602.
Whitby and Mainwaring resumed their quarrel in 1627, when Whitby complained to the Privy Council about Mainwaring’s son-in-law, Robert Brerewood, who had recently been made clerk of the Pentice. Along with Viscount Savage, whose own nominees had been passed over,
Chester customarily returned its recorder to Parliament, and Whitby was therefore elected in 1614. On taking his seat he made no recorded speeches, nor was he named to any committees.
Whitby also defended Sir Edward Coke during the Parliament. Coke had prosecuted the patentee Sir John Lepton, groom of the privy chamber, who responded with a damning attack on Coke, which the House called to be read. Whitby, who had previously been one of those appointed on 24 Nov. to search Lepton’s study, stated that if it was acceptable for Lepton’s comments to be read then Coke should be permitted to answer in writing.
Whitby was re-elected in 1624 but made only one recorded speech, arguing on 9 Mar. that the supersedeas bill should be extended to cover the courts in the Palatinate of Chester. Although the bill was subsequently committed in order to hear his arguments, Whitby failed to win approval for the amendment.
Whitby was again the senior burgess for Chester in 1626 and was appointed chairman of the grievances committee shortly after the opening of Parliament (15 February).
On 1 Apr., in his next speech, Whitby argued that he was not satisfied that the speeches of the king and lord keeper (Sir Thomas Coventry*) at the opening of Parliament enshrined the liberties and privileges of the Commons, and stated that ‘there are many things yet left unexplained which touch our liberties.’
Whitby was appointed to nine bill committees and was among those named to draft measures for the increase of mariners’ wages (22 Mar.) and to remedy the grievances concerning the alnager (25 May).
In 1628 Whitby was elected to his sixth consecutive Parliament as Chester’s senior Member. As in 1626, he played an influential role in safeguarding the House’s liberties and privileges and upholding parliamentary precedents. On 4 Apr. John Selden chose him as his assistant to examine the ancient liberties of the subject, and 13 days later he was named to the committee to search for copies of records and compare them with the originals.
Whitby’s knowledge of precedents and law was amply demonstrated on several occasions during this Parliament. When the House was inclined to punish the recorder of Wells, John Baber*, for billeting soldiers without warrant, Whitby swayed the House by pointing out that this ‘would tacitly imply it might have been done with a warrant’.
Whitby died on 18 Apr. 1639 and was interred seven days later in Francis Gamull’s vault in St. Mary’s, Chester.
