Born at Raynham Hall, Norfolk, Townshend succeeded to the peerages in December 1687, and was educated at Eton College and King's College, Cambridge. He had Tory sympathies when he took his seat in the House of Lords, but his views changed, and he began to take an active part in politics as a Whig. For a few years after the accession of Queen Anne he remained without office, but in November 1708 he was appointed Captain of the Yeomen of the Guard, having in the previous year been summoned to the Privy Council. He was ambassador extraordinary and plenipotentiary to the States-General from 1709 to 1711, taking part during these years in the negotiations which preceded the conclusion of the Treaty of Utrecht.