Pope Clement XI ( 23 July 1649 – 19 March 1721 ), born Giovanni Francesco Albani, was Pope from 1700 until his death in 1721.

Pope Innocent XIII ( 13 May 1655 – 7 March 1724 ) was pope from 1721 until his death.

* March – Joseph de Guignes, French orientalist ( b. 1721 )

* March 26 – John Mudge, English physician and inventor ( b. 1721 )

On 6 March 1711, she was proclaimed a Tsarevna, and on 23 December 1721, a Tsesarevna.

In March 1721, the Infanta Mariana Victoria arrived in Paris amid much joy.

Since Maurice had also given her more serious grounds of complaint against him, he consented to an annulment of the marriage in 21 March 1721.

* Henry Boyle, 1st Baron Carleton ( 25 June 1721 – 27 March 1725 )

* James Stanhope, 1st Earl Stanhope: 16 March 1718 – 4 February 1721

* James Craggs the Younger MP: 16 March 1718-16 February 1721

Bach's dedication to the Margrave was dated 24 March 1721.

He resigned the Exchequer in January 1721, and in March was found guilty by the Commons of the " most notorious, dangerous and infamous corruption ".

March 1721 – 6 February 1775 ) was a British politician.

10 June 1657 – 16 March 1721 ) was an English politician and the father of James Craggs the Younger.

John Mudge ( 1721 – 26 March 1793 ) was an English physician and amateur creator of telescope mirrors.

* Infanta Mariana Victoria of Spain ( 31 March 1718 – 15 January 1781 ) was the eldest daughter of Philip V of Spain and his second wife Elisabeth of Parma ; born in Madrid, she moved to France in 1721 and lived at the Tuileries Palace in Paris with her proposed husband ; the engagement was broken off due to tense relations regarding the marriages of the Regents daughters marrying to of Philip V's sons.

* Charlotte Lee, Lady Baltimore ( 13 March 1678 ( Old Style ) – 22 January 1721 ), first married to Benedict Calvert, 4th Baron Baltimore and secondly to Christopher Crowe, Consul of Leghorn.

On May 31, 1721, he was beatified, and on March 19, 1729, he was canonized under Pope Benedict XIII.

He died 24 March 1721.

Troubled by the lack of support and communication from London, Rogers set sail for Britain in March 1721.

Mariana Victoria arrived in Paris on 2 March 1721 amongst much celebration and took up residence at the Palais du Louvre.

Joseph de Guignes ( October 19, 1721 – March 19, 1800 ), was a French orientalist, sinologist and turkologist born at Pontoise, the son of Jean Louis de Guignes and Françoise Vaillant.

In March 1721 Charles Bridgeman, James Thornhill, John Wootton and Gibbs were all travelling together from London to Wimpole Hall where they were all working for the Edward Harley Earl of Oxford, Thornhill recalled they drank Harley's " healths over and over, as well in our civil as bacchanalian hours " and talked " of building, pictures and may be towards the close of politics or religion ".

* 1721 – Grinling Gibbons, English sculptor and woodcarver ( b. 1648 )

* 1667 – Louise of Mecklenburg-Güstrow ( d. 1721 )

Alexander Selkirk ( 1676 – 13 December 1721 ) was a Scottish sailor who spent four years as a castaway after being marooned on an uninhabited island.

* 1721 – Michel Chamillart, French statesman ( b. 1652 )

* 1665 – Jacques Lelong, French bibliographer ( d. 1721 )

* 1721 – Roger Sherman, American statesman and signer of the U. S. Declaration of Independence ( d. 1793 )

* 1721 – Granville Leveson-Gower, 1st Marquess of Stafford, English politician ( d. 1803 )

* 1648 – John Sheffield, 1st Duke of Buckingham and Normanby, English statesman and poet ( d. 1721 )

* Pierre Coustant ( 1654 – 1721 )

* Catherine of Siena ( 1707 – 1721 ) Opere, ed.

* 1721 – Richard Lumley, 1st Earl of Scarbrough, English statesman ( b. 1640 )

* 1721 – James Elphinston, British philologist ( d. 1809 )

* 1721 – Guillaume-Chrétien de Lamoignon de Malesherbes, French statesman ( d. 1794 )

* 1721 – François Hemsterhuis, Dutch philosopher ( d. 1790 )

* 1721 – Peter Pelham, English-born American musician and composer ( d. 1805 )

* 1721 – Alexander Selkirk, Scottish sailor and castaway ( b. 1676 )

Elihu Yale ( April 5, 1649 – July 8, 1721 ) was an American merchant and philanthropist, governor of the East India Company settlement at Madras and a benefactor of the Collegiate School of Connecticut, which in 1718 was named Yale College in his honor.

* 1721 – John McKinly, American physician ( d. 1796 )

* 1721 – Christian Friedrich Heinecken, German child prodigy ( d. 1725 )

* 1721 – John Reid, British army general and composer ( d. 1807 )

Rabbi Yedidiah Tiah Weil ( 1721 – 1805 ), a Prague resident, who described the creation of golems, including those created by Rabbi Avigdor Kara of Prague, did not mention the Maharal, and Rabbi Meir Perels ' biography of the Maharal published in 1718 does not mention a golem.

* 1721 1 June – George I sent a letter to Philip V promising " to make use of the first favourable Opportunity to regulate this Article ( the Demand touching the Restitution of Gibraltar ), with the Consent of my Parliament ".

Their purpose was defense from attacks from water and their construction was urged by the Great Northern War of 1700 – 1721.

* 1790 – François Hemsterhuis, Dutch philosopher ( b. 1721 )