Other than Bedford himself, notable members included John Montagu, 4th Earl of Sandwich; Granville Leveson-Gower, 2nd Earl Gower; Richard Rigby, who served as principal Commons manager for the group; Thomas Thynne, 3rd Viscount Weymouth; Edward Thurlow; and George Spencer, 4th Duke of Marlborough The Bedfordites emerged as a specific faction in the wake of Bedford's dismissal as Secretary of State in 1751.
Initially, Bedford opposed the ministry, dominated by the Old Corps Whigs led by Prime Minister Henry Pelham and his brother the Duke of Newcastle.
Nevertheless, the strength of the opposition forces convinced the Duke of Grafton, who had succeeded Chatham as effective Prime Minister, that some effort must be made to bring the Bedfords into the government.
Gower continued to lead the main body of the Bedford faction, however, which finally entered the government in December 1783 as supporters of Pitt the Younger.
On the whole, neither contemporaries nor historians have looked on the Bedford faction with great favor – they have traditionally been seen as essentially rapacious job-seekers, willing to sell themselves to the highest bidder in exchange for positions.