American statesman, born on the 26th of October 1757 at Charleston, SC, the son of Charles Pinckney (17311784), first president of the first South Carolina Provincial Congress (Jan. to June 1775), and was a cousin of Charles Cotesworth Pinckney and Thomas Pinckney. He was studying law at the outbreak of the War of Independence, served in the early campaigns in the South, and in 1779 was elected to the South Carolina House of Representatives. He was captured by the British at the fall of Charleston (1780), and remained a prisoner until the close of hostilities. He was elected a delegate to the Congress of the Confederation in 1784, 1785 and 1786, and in 1786 he moved the appointment of a committee to take into consideration the affairs of the nation, advocating in this connection an enlargement of the powers of Congress. The committee having been appointed, Pinckney was made chairman of a sub-committee which prepared a plan for amending the articles of confederation. In 1787 he was a delegate to the Federal constitutional convention, and on the same day (May 29) on which Edmund Randolph presented what is known as the Virginia plan, Pinckney presented a draft of a constitution which is known as the Pinckney plan. Although the Randolph resolutions were made the basis on which the new constitution was framed, Pinckneys plan seems to have been much drawn upon. Furthermore, Pinckney appears to have made valuable suggestions regarding phrasing and matters of detail. On the 18th of August he introduced a series of resolutions, and to him should probably be accredited the authorship of the substance of some thirty-one or thirty-two provisions of the constitution 1 Pinckney was president of the State Convention of 1790 that framed a new constitution for South Carolina, was governor of the state from 1789 to 1792, a member of the state House of Representatives in 17921796, and again governor from 1796 to 1798. From 1799 to 1801 he was a member of the United States Senate. He entered public life as a Federalist, but later became the leader in organizing the Democratic-Republican party in his state, and contributed largely to the success of Thomas Jefferson in the presidential election of 1800. By Jeffersons appointment he was American minister to Spain from 1801 to 1805. In general his mission was a distinct failure, his arrogance and indiscretions finally causing the Spanish government to request his recall. He was elected to the state House of Representatives in 1805, was again governor of South Carolina from 1806 to 1808, in 18101814 was once more a member of the state House of Representatives, in which he defended President Madisons war policy, and from 1819 to 1821 was a member of the National House of Representatives, in which he opposed the Missouri Compromise in a brilliant speech. He died at Charleston, SC, on the 29th of October 1824.
His son, Henry Laurens Pinckney (17941863), was a member of the state House of Representatives in 18161832, founded in 1819 and edited for fifteen years the Charleston Mercury, the great exponent of states rights principles, and was a member of the National House of Representatives in 18331837.