Although Earle received no legacy from his father, he was provided for financially while still a minor through the purchase on his behalf of two small Dorset manors, Sturminster Marshall and Newton Peverel.
Representing Weymouth in the 1621 Parliament, Earle began his Commons’ career quietly. In the first two months he was named to just two legislative committees, concerning trial by battle and the Devon estates of Sir Warwick Hele* (10 and 13 March). Following the Easter recess, however, he became somewhat more active, particularly on economic affairs. Entitled as a port town burgess to help scrutinize the bill for freer fishing on the American coast, he chaired the committee, and on 24 May reported the measure. On 2 May he preferred a bill to regulate apprenticeship payments, but this legislation received only a first reading. He also clarified a legal point during the debate on 7 May on the bill against extortionate customs officials.
Earle did not sit in the next two parliaments, but in 1626 he was returned at Poole alongside John Pyne, for whom he had stood surety at the Middle Temple seven years earlier.
Representing Lyme Regis in the third Caroline Parliament, Earle was named during the 1628 session to four bill committees, one of which concerned the problem of recusancy (28 May). Surprisingly for a lawyer, he remained silent during the debates about the liberties of the subject, though he was appointed on 28 Mar. to help check the precedents assembled by John Selden*. Nominated on 4 June to the committee to investigate ordnance exports, he may have delivered its report (11 June), and certainly accused Burlamachi on 7 June of misleading the Commons over the Crown’s recruitment of foreign mercenaries.
During the 1629 session Sir Walter Earle was one of the leading figures in the Commons. Earle’s own standing apparently rose through association, and he was named to five committees on which his brother also served. Of these, two were concerned with religion, namely an investigation into suspected government tinkering with the Thirty-Nine Articles, and a bill against simony (5 and 23 February). More significantly, Earle was appointed on 14 Feb. to help consider the Exchequer barons’ refusal to release John Rolle’s* confiscated merchandise, while six days later he was added to the committee established on 22 Jan. to investigate Rolle’s treatment. Independently of his brother, he was added to the committee to consider a fresh petition from Henry Billingsley, and nominated to a legislative committee concerned with a private legal dispute (13 and 21 February).
Despite having been promised the recordership of Weymouth in succession to Hugh Pyne*, Earle was denied this office in February 1629 through the machinations of the borough’s mayor.
