The committee found that Benjamin Sebastian had received a pension of $2,000 a year from Spain in return for his involvement in the Conspiracy. Federal judge Harry Innes, a frequent object of Marshall's suspicions, testified against Sebastian before the committee. Sebastian resigned his position on the Court, and the House declined to pursue further action against him. Marshall also unsuccessfully lobbied through his brother-in-law, U.S. Attorney Joseph Hamilton Daveiss, for a grand jury to indict Aaron Burr for attempting to enlist Kentuckians to participate in the Burr conspiracy. Marshall's intensified attacks on Judge Harry Innes in the pages of the Western World became so severe that they prompted Innes to sue both Marshall and Western World co-founder Joseph M. Street for libel. Both cases dragged on for several years in the courts. Buoyed by his involvement in the exposure of Benjamin Sebastian, Marshall declared his candidacy for a seat in the Kentucky House in 1807. Friends of Innes and others implicated by Marshall in the Spanish Conspiracy recruited Nathaniel Richardson, a lawyer turned farmer, to oppose Marshall. Approximately 1,100 votes were cast, and Marshall was elected by a majority of 11 votes. Marshall's biographer records that "the records of Humphrey Marshall's services in the Legislature at this time are scanty, the journals of the session being not in existence, as it is believed; or, at any rate, extremely rare." He is believed to have introduced a measure that reduced the limitation on ejectments from twenty years to seven. Duel with Henry Clay Marshall sought reelection in 1808 and defeated his opponent, John M. Scott, by a majority of 11 votes, identical to his margin the previous year. Expectations of a confrontation between Marshall and fellow representative Henry Clay were high during the session, owing to tensions between the two dating back to Clay's defense of Aaron Burr during the Burr conspiracy. George D. Prentice, in his biography of Clay, records that some of Clay's allies in the House refused to vote for him for Speaker of the House so that Clay would remain on the chamber floor, from whence he was better able to counter Marshall. Clay's chair in the chamber was separated from Marshall's only by that of General Christopher Riffe, the representative from Lincoln County, who was described as "a burly German of almost gigantic size and herculean strength". A few minor quarrels passed between Marshall and Clay