In Rome, the papal collections were brought together by Pope Nicholas V, in separate Greek and Latin libraries, and housed by Pope Sixtus IV, who consigned the Bibliotheca Apostolica Vaticana to the care of his librarian, the humanist Bartolomeo Platina in February 1475.

In 1470 the humanist scholar Bartolomeo Platina wrote in his Lives of the Popes that,

Bartolomeo Platina, who was one of these, wrote a threatening letter to the Pope, and was imprisoned, but later discharged.

Its principal members were humanists, like Bessartion's protégé Giovanni Antonio Campani ( Campanus ), Bartolomeo Platina, the papal librarian, and Filippo Buonaccorsi, and young visitors who received polish in the academic circle, like Publio Fausto Andrelini of Bologna who took the New Learning to the University of Paris, to the discomfiture of his friend Erasmus.

Bartolomeo Platina recommended taking beetroot with garlic to nullify the effects of ' garlic-breath '.

Pope Sixtus IV Appoints Bartolomeo Platina Prefect of the Vatican Library, fresco by Melozzo da Forlì, 1477, now in the Vatican Museums.

When its first librarian, Bartolomeo Platina, produced a listing in 1481, the library held over 3, 500 items, making it by far the largest in the Western world.

* Bartolomeo Platina ( 1475 – 1481 )

Contra amores by Bartolomeo Platina ( 1421 – 1481 )

* Lives of the Popes, Volume 1: Antiquity, Bartolomeo Platina, ed.

Pope Sixtus IV appoints Bartolomeo Platina prefect of the Vatican Library, c. 1477 ( fresco ) ( Vatican Museums )

Bartolomeo Platina and Filippo Buonaccorsi were among the most distinguished members of the circle, which also included Giovanni Sulpizio da Veroli, the editor of the first printed De architectura of Vitruvius and organizer of the first production of a Senecan tragedy mounted since Antiquity.

* Bartolomeo della Rocca ( 1467 – 1504 ), called Cocles, an Italian scholar

In some ways, Allori is the last of the line of prominent Florentine painters, of generally undiluted Tuscan artistic heritage: Andrea del Sarto worked with Fra Bartolomeo ( as well as Leonardo da Vinci ), Pontormo briefly worked under Andrea, and trained Bronzino, who trained Allori.

The invention of the modern piano is credited to Bartolomeo Cristofori ( 1655 – 1731 ) of Padua, Italy, who was employed by Ferdinando de ' Medici, Grand Prince of Tuscany, as the Keeper of the Instruments.

The 16th-century Italian historian Onofrio Panvinio, commenting on one of Bartolomeo Platina's works that refer to Pope Joan, theorized that the story of Pope Joan may have originated from tales of Pope John XII ; John reportedly had many mistresses, including one called Joan, who was very influential in Rome during his pontificate.

Notable architects involved in the project included the Florentine Filarete, who was commissioned to build the high central entrance tower, and the military specialist Bartolomeo Gadio.

Architects who were renowned for their constructions using the style include Francesco Bartolomeo Rastrelli, an Italian architect who worked in Russia and who was noted for his lavish and opulent works, Philip de Lange, who worked in both Danish and Dutch Rococo architecture, or Matthäus Daniel Pöppelmann, who worked in the late Baroque style and who contributed to the reconstruction of the city of Dresden, in Germany.

* April 9 – Following the death of Pope Gregory XI and riots in Rome calling for a Roman pope, the cardinals, who are mostly French, elect Pope Urban VI ( Bartolomeo Prignano, Archbishop of Bari ) as the 202nd Pope.

Orphaned at eleven, Raphael's formal guardian became his only paternal uncle Bartolomeo, a priest, who subsequently engaged in litigation with his stepmother.

Frescos in Perugia of about 1505 show a new monumental quality in the figures which may represent the influence of Fra Bartolomeo, who Vasari says was a friend of Raphael.

* Major ( also Marquis ) Bartolomeo Cavalcanti: Old man who plays the role of Prince Andrea Cavalcanti's father.

Bartolomeo was a barber, and his wife Rosa was the sister of a woman who lived in the same boarding house.

: 1731, 27th, Bartolomeo Crisofani, called Bartolo Padovano, died, famous instrument maker to the Most Serene Grand Prince Ferdinando of fond memory, and he was a skillful maker of keyboard instruments, and also the inventor of the pianoforte, that is known through all Europe, and who served His Majesty the King of Portugal V, who paid two hundred gold louis d ' or for the said instruments, and he died, as has been said, at the age of eighty-one years.

Charles, who counted on the mercenary companies under John Hawkwood and Bartolomeo d ' Alviano, for a total of some 14, 000 men, was able to divert the French from Naples to other regions of the kingdom and to harass them with guerrilla tactics.

Owing to the poverty of the family, he studied with his uncle Bartolomeo Maggi, ( 1477-1552 ), a famous surgeon who was a lecturer at the University of Bologna as well as court physician to Julius III.

Cabiria was a story about a slave named Maciste ( played by Bartolomeo Pagano ) who was involved in the rescue of a Roman princess from an evil Carthaginian king who plotted to sacrifice her to the cruel god Moloch.

In Venice he was given a valuable commission from the emigrant German community for the church of San Bartolomeo.

Bartolomeo Ammannati ( 18 June 1511 – 13 April 1592 ) was an Italian architect and sculptor, born at Settignano, near Florence.

Fra Bartolomeo or Fra Bartolommeo ( di Pagholo ) ( March 28, 1472 – October 6, 1517 ), also known as Baccio della Porta, was an Italian Renaissance painter of religious subjects.

Bartolomeo learned perspective from the younger artist, while Raphael added skills in coloring and handling of drapery, which was noticeable in the works he produced after their meeting.

Fra Luca Bartolomeo de Pacioli ( sometimes Paccioli or Paciolo ; 1445 – 1517 ) was an Italian mathematician, Franciscan friar, collaborator with Leonardo da Vinci, and seminal contributor to the field now known as accounting.

Mariotto di Bigio di Bindo Albertinelli ( October 13, 1474 – November 5, 1515 ) was a High Renaissance Italian painter of the Florentine school, closely involved with Fra Bartolomeo and influenced by Raphael.

Vasari's opinion was that Mariotto was not so well grounded in drawing as Bartolomeo, and he tells that, to improve his hand he had taken to drawing the antiquities in the Medici garden, where he was encouraged by Madonna Alfonsina, the mother of Lorenzo de ' Medici.

Pope Urban VI ( c. 1318 – 15 October 1389 ), born Bartolomeo Prignano, was Pope from 1378 to 1389.

An early description of Suleiman, a few weeks following his accession, was provided by the Venetian envoy Bartolomeo Contarini: " He is twenty-six years of age, tall, but wiry, and of a delicate complexion.

* 1709: The first piano was built by Bartolomeo Cristofori

The original project was begun by Bartolomeo Ammannati in 1577 – 1582, and continued by Filippo Juvarra in the 18th century.

It was claimed that Caroline had committed adultery with a low-born man: Bartolomeo Pergami.

Baccio D ' Agnolo ( 19 May 1462 – 6 March 1543 ), born Bartolomeo Baglioni, was an Italian woodcarver, sculptor and architect from Florence.

Pope Gregory XVI ( 18 September 1765 – 1 June 1846 ), born Bartolomeo Alberto Cappellari, was Pope of the Roman Catholic Church from 1831 to 1846.

He was consecrated as bishop by Bartolomeo Pacca, Cardinal Bishop of Ostia and Velletri and dean of the Sacred College of Cardinals, with Pier Francesco Galleffi, Cardinal Bishop of Porto e Santa Rufina and sub-dean of the Sacred College of Cardinals, and Tommasso Arezzo, Cardinal Bishop of Sabina, acting as co-consecrators.