* Alfonso, Count of Poitou ( 1220 – 1271 ), jure uxoris Alfonso II, Count of Toulouse

* Stephen ( 1236 – 10 April 1271 ), father of Andrew III of Hungary.

Iron plate with an order 6 magic square in Persian / Arabic numbers from China, dating to the Yuan Dynasty ( 1271 – 1368 ).

Arabic numerals were introduced to China during the Yuan Dynasty ( 1271 – 1368 ) by the Muslim Hui people.

Alphonse of Poitiers ( 11 November 1220 – 21 August 1271 ) was the Count of Poitou from 1225 and Count of Toulouse ( as Alfonso II ) from 1247.

* 1271 – In Syria, sultan Baybars conquers the Krak of Chevaliers.

** Philip III ( 1271 – 1285 )

* Philip III ( 1271 – 1285 )

Hand cannon from the Mongol Yuan Dynasty ( 1271 – 1368 )

The oldest confirmed written mention of dominoes in China comes from the Former Events in Wulin ( i. e. the capital Hangzhou ) written by the Yuan Dynasty ( 1271 – 1368 ) author Zhou Mi ( 1232 – 1298 ), who listed " pupai " ( gambling plaques or dominoes ) as well as dice as items sold by peddlers during the reign of Emperor Xiaozong of Song ( r. 1162 – 1189 ).

* 1271 – Kublai Khan renames his empire " Yuan " ( 元 yuán ), officially marking the start of the Yuan Dynasty of Mongolia and China.

# Isabella ( 2 March 1241 – 28 January 1271 ), married Theobald II of Navarre

Rabbinical Judaism calculated a lifespan of Moses corresponding to 1391 – 1271 BCE ; Christian tradition has tended to assume an earlier date.

Pedro became the physician of Pope Gregory X ( 1271 – 76 ) early in his reign.

1210 – 10 January 1276 ), born Tedaldo Visconti, was Pope from 1271 to 1276.

* Papal election, 1268 – 1271

* 1271 – Wenceslaus II of Bohemia ( d. 1305 )

* 1271 – Charles Martel of Anjou ( d. 1295 )

* 31 May – Maurice de Berkeley, 2nd Baron Berkeley, English rebel baron ( b. 1271 )

* April 7 – Joan of Acre, daughter of King Edward I of England ( b. 1271 )

* November 11 – Alphonse of Toulouse, son of Louis VIII of France ( d. 1271 )

* July 4 – Saint Elizabeth of Portugal ( b. 1271 )

* 1271 – July 2 – Kings Otakar II of Bohemia and Stephen V of Hungary sign the first Peace of Pressburg, settling territorial claims following the failed invasion of Hungary by Otakar II.

# Simon the Younger de Montfort ( April 1240 – 1271 )

Bolesław the Pious () ( 1224 / 27 – 14 April 1279 ) was a Duke of Greater Poland during 1239 – 1247 ( according to some historians during 1239 – 1241 sole Duke of Ujście ), Duke of Kalisz during 1247 – 1249, Duke of Gniezno during 1249 – 1250, Duke of Gniezno-Kalisz during 1253 – 1257, Duke of whole Greater Poland and Poznań during 1257 – 1273, in 1261 ruler over Ląd, regent of the Duchies of Masovia, Płock and Czersk during 1262 – 1264, ruler over Bydgoszcz during 1268 – 1273, Duke of Inowrocław during 1271 – 1273, and Duke of Gniezno-Kalisz since 1273 until his death.

* Sir Hugh de Balliol, who died without issue before April 10, 1271.

* Alan de Balliol, who died before 10 April 1271 without issue.

7 April 1269 ), married Guillaume II de Chauvigny, seigneur of Châteauroux ( 1224 – Palermo, 3 January 1271 )

* Sir Hugh de Balliol, who died without issue before April 10, 1271.

Charles Martel ( 8 September 1271 – 12 August 1295 ) of the Angevin dynasty, also known as Charles I Martel, (, ) was the eldest son of king Charles II of Naples and Maria of Hungary, the daughter of King Stephen V of Hungary.

The population according to the 2001 census was 1271, its density was 99. 8 / km² and the area is 12. 73 km².

From the 1250s the fortunes of the Knights Hospitaller took a turn for the worse and in 1271 Krak des Chevaliers was captured by the Mamluk Sultan Baibars after a siege lasting 36 days.

Mamluk Sultan Baibars captured the castle in 1271.

Baibars was free to continue his campaigns: in 1270 he had the Assassins kill Philip of Montfort, and in 1271 he captured the Hospitaller and Teutonic Knights strongholds of Krak des Chevaliers and Montfort Castle.

* 1271 — Edward I of England and Charles of Anjou arrive in Acre, starting the Ninth Crusade against Baibars.

* 1271 – Baibars conducts an unsuccessful siege of the city of Tripoli, and also fails in an attempted naval invasion of Cyprus.

* 1271 – Edward I of England and Charles of Anjou arrive in Acre, starting the Ninth Crusade against Baibars ; however, they are unable to capture any territory and a peace is quickly negotiated.

Louis died in 1271 and Baibars returned north to deal with Krak des Chevaliers.

Baibars attacked again in 1271 by starting the Siege of Tripoli, sending a letter to Bohemond threatening him with total annihilation and taunting him for his alliance with the Mongols:

The army of Edward and Charles arrived in 1271, just as Baibars was besieging Tripoli, which as the last remaining territory of the County of Tripoli was full of tens of thousands of Christian refugees.

Having finished construction of the fleet, rather than attack the Crusader army directly, Baibars attempted to land on Cyprus in 1271, hoping to draw Hugh III of Cyprus ( the nominal King of Jerusalem ) and his fleet out of Acre, with the objective of conquering the island and leaving Edward and the crusader army isolated in the Holy Land.