Information: - Gildas (c. 500570) also known as Gildas the Wise or Gildas Sapiens was a 6th-century British monk best known for his scathing religious polemic "De Excidio et Conquestu Britanniae", which recounts the history of the Britons before and during the coming of the Saxons. He is one of the best-documented figures of the Christian church in the British Isles during the sub-Roman period, and was renowned for his Biblical knowledge and literary style. In his later life, he emigrated to Brittany where he founded a monastery known as St. Gildas de Rhuys. - Y Gododdin is a medieval Welsh poem consisting of a series of elegies to the men of the Brittonic kingdom of Gododdin and its allies who, according to the conventional interpretation, died fighting the Angles of Deira and Bernicia at a place named "Catraeth" in c. AD 600. It is traditionally ascribed to the bard Aneirin and survives only in one manuscript, the Book of Aneirin. - Kublai Khan ("Xubila xaan" "Khagan Qubilai"; September 23, 1215 February 18, 1294), born Kublai ("Xubila" also spelled Khubilai) and also known by the temple name Shizu (Emperor Shizu of Yuan), was the fifth Khagan (Great Khan) of the Mongol Empire ("Ikh Mongol Uls"), reigning from 1260 to 1294 (although due to the division of the empire this was a nominal position). He also founded the Yuan dynasty in China as a conquest dynasty in 1271, and ruled as the first Yuan emperor until his death in 1294. - Asia is Earth's largest and most populous continent, located primarily in the eastern and northern hemispheres and sharing the continental landmass of Eurasia with the continent of Europe. Asia covers an area of , about 30% of Earth's total land area and 8.7% of the Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Asia is notable for not only its overall large size and population, but also dense and large settlements as well as vast barely populated regions within the continent of 4.4 billion people. - China, officially the People's Republic of China (PRC), is a unitary sovereign state in East Asia. With a population of over 1.381billion, it is the world's most populous country. The state is governed by the Communist Party of China, and its capital is Beijing. It exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two mostly self-governing special administrative regions (Hong Kong and Macau), and claims sovereignty over Taiwan. The country's major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a great power and a major regional power within Asia, and has been characterized as a potential superpower. - Book of the Marvels of the World (French: "Livre des Merveilles du Monde") or Description of the World ("Devisement du Monde"), in Italian Il Milione ("The Million") or "Oriente Poliano" and in English commonly called The Travels of Marco Polo, is a 13th-century travelogue written down by Rustichello da Pisa from stories told by Marco Polo, describing Polo's travels through Asia between 1276 and 1291, and his experiences at the court of Kublai Khan. - Rustichello da Pisa , also known as Rusticiano ( fl . late 13th century ) , was an Italian romance writer . He is best known for cowriting Marco Polo 's autobiography , The Travels of Marco Polo , while they were in prison together in Genoa . Earlier , he wrote the Roman de Roi Artus ( Romance of King Arthur ) , also known as the Compilation , the earliest known Arthurian romance by an Italian author . - Tuscany is a region in central Italy with an area of about and a population of about 3.8 million inhabitants (2013). The regional capital is Florence ("Firenze"). - The History of the Britons is a purported history of the indigenous British (Brittonic) people that was written around 828 and survives in numerous recensions that date from after the 11th century. - King Arthur is a legendary British leader who, according to medieval histories and romances, led the defence of Britain against Saxon invaders in the late 5th and early 6th centuries AD. The details of Arthur's story are mainly composed of folklore and literary invention, and his historical existence is debated and disputed by modern historians. The sparse historical background of Arthur is gleaned from various sources, including the "Annales Cambriae", the "Historia Brittonum", and the writings of Gildas. Arthur's name also occurs in early poetic sources such as "Y Gododdin". - Pisa is a city in Tuscany, Central Italy, straddling the River Arno just before it empties into the Tyrrhenian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for its leaning tower (the bell tower of the city's cathedral), the city of over 90,834 residents (around 200,000 with the metropolitan area) contains more than 20 other historic churches, several medieval palaces and various bridges across the River Arno. Much of the city's architecture was financed from its history as one of the Italian maritime republics. - Marco Polo (; 1254January 89, 1324) was a Venetian merchant traveller and citizen of the Venice Republic whose travels are recorded in "Livres des merveilles du monde" ("Book of the Marvels of the World", also known as "The Travels of Marco Polo", c. 1300), a book that described to Europeans the wealth and great size of China, its capital Peking, and other Asian cities and countries. - The Province of Pisa is a province in the Tuscany region of central Italy. Its capital is the city of Pisa. With an area of and a total population of 421,642, it is the second most populous and fifth largest province of Tuscany. It is subdivided into 37 "comuni". With a history dating back to the Etruscans and Phoenicians, the province achieved considerable power and influence in the Mediterranean in the 12th and 13th centuries. Pisa, the provincial capital, is well known for its Leaning Tower which attracts tourists to the area with many historic landmarks. - Venice (; ) is a city in northeastern Italy and the capital of the Veneto region. It is situated across a group of 117 small islands that are separated by canals and linked by bridges. These are located in the shallow Venetian Lagoon, an enclosed bay that lies between the mouths of the Po and the Piave Rivers. Parts of Venice are renowned for the beauty of their settings, their architecture, and artwork. The lagoon and a part of the city are listed as a World Heritage Site. What is the relationship between 'rustichello da pisa' and '1300'?
The answer to this question is:
date of birth