Weed has been severely criticized for the defeat of Clay in the National Convention of 1839. Clay received early assurance that Weed was “warmly and zealously” in favor of his election, and Shepard, in his Martin Van Buren, says that “the slaughter of Henry Clay had been effected by the now formidable Whig politicians of New York, cunningly marshaled by Thurlow Weed.” Weed did work against the election of Clay delegates to the convention, but he did so because he foresaw that Clay would probably be defeated at the polls, and that there was a good chance of Harrison's election; and he proved himself a wise friend of Clay by urging him, in the campaign of 1844, to write