Guidobaldo da Montefeltro and Giovanni Maria da Varano returned to Urbino and Camerino, and Fossombrone revolted.

She further displayed a shrewd political acumen in her negotiations with Cesare Borgia, who had dispossessed Guidobaldo da Montefeltro, duke of Urbino, the husband of her sister-in-law and good friend Elisabetta Gonzaga in 1502.

* April 10 – Guidobaldo da Montefeltro, Italian condottiero ( b. 1472 )

Federico was succeeded by his son Guidobaldo da Montefeltro, who married Elisabetta Gonzaga, daughter of the ruler of Mantua, the most brilliant of the smaller Italian courts for both music and the visual arts.

Guidobaldo I, who was heirless, called Francesco Maria at his court, and named him as heir of the Duchy of Urbino in 1504, this through the intercession of Julius II.

Simple local wares were being made in the 15th century at Urbino, but after 1520 the Della Rovere dukes, Francesco Maria I della Rovere and his successor Guidobaldo II, encouraged the industry, which exported wares throughout Italy, first in a manner called istoriato using engravings after Mannerist painters, then in a style of light arabesques and grottesche after the manner of Raphael's stanze at the Vatican.

Guidobaldo I ( 1492-1508 ) was forced to flee Urbino to escape the armies of Cesare Borgia.

Guidobaldo became a staunch friend of Galileo and helped him again in 1592, when he had to apply to the chair of mathematics at the University of Padua, due to the hatred and machinations of Giovanni de ' Medici, a son of Cosimo I de ' Medici, against Galileo.

# Guidobaldo II della Rovere ( 1514 – 1574 )

Those who escaped the Inquisition were received at Pesaro by Guidobaldo II della Rovere, Duke of Urbino.

* Guidobaldo II della Rovere, Duke of Urbino, commissioned the famous Venus of Urbino painting.

The painting was commissioned by Guidobaldo II della Rovere, the Duke of Urbino, possibly to celebrate his 1534 marriage.

The once-fortified village is now insignificant, with only 13 inhabitants according to the 2001 census, but was the home town of Fausto Cardinal Poli, private secretary to Pope Urban VIII, and benefited from his public-spiritedness: the church of S. Salvatore built by Poli in around 1640 was richly decorated with stuccos and frescos by Guidobaldo Abatini and Salvi Castellucci.

The Duke of Urbino, Duke Guidobaldo II, honoured him with the title Marchese del Monte so the family had only become a noble one in the generation before Guidobaldo.

He served various noblemen then, among them duke Guidobaldo II, in whose court his son Torquato was educated.

Guidobaldo had hoped to have the Jews and conversos of Turkey select Pesaro as a commercial center ; when that did not happen, he expelled the New Christians from Pesaro and other districts in 1558 ( ib.

It drew on many authors, both classical writers and moderns such as Guidobaldo del Monte and Marin Mersenne.

Sarpi wrote on projectile motion in the period 1578 – 84, in the tradition of Niccolò Fontana Tartaglia ; and then again in reporting on Guidobaldo del Monte's ideas in 1592, possibly by then having met Galileo Galilei.

In 1502, Cesare Borgia, with the connivance of his Papal father, Alexander VI, dispossessed Duke Guidobaldo and Elisabetta Gonzaga.

* Guidobaldo del Monte, Marchese del Monte, publishes Mechanicorum Liber in Pisa.

Guidobaldo del Monte.

Guidobaldo del Monte ( 11 January 1545-6 January 1607, var.

Guidobaldo del Monte was born in Pesaro.

On the death of his father Guidobaldo inherited the title of Marchese.

Guidobaldo studied mathematics at the University of Padua in 1564.

In fact Guidobaldo may have known Tasso before they studied at Padua together, for Tasso was almost exactly the same age as Guidobaldo and had been educated at the court of the Duke of Urbino, with the duke's son, from 1556.

Guidobaldo then served as a soldier in the ensuing conflict in Hungary between the Habsburg Empire and the Ottoman Empire.

This was followed by the submission of the Montefeltro of Urbino and the da Polenta of Ravenna, and of the cities of Senigallia and Ancona.

He was a welcomed guest at the Este court in Ferrara, and in Urbino he spent part of the hot-weather season with the soldier-prince Federico III da Montefeltro.

In particular, Martin confirmed Giorgio Ordelaffi in Forlì, Ludovico Alidosi in Imola, Malatesta IV Malatesta in Rimini, and Guidantonio da Montefeltro in Spoleto, who would later marry the pope's niece Caterina Colonna.

The secular fortunes of the Della Rovere began when Sixtus invested his nephew Giovanni with the lordship of Senigallia and arranged his marriage to the daughter of Federico III da Montefeltro, duke of Urbino ; from this union came a line of Della Rovere dukes of Urbino that lasted until the line expired in 1631.

*** daughter Battista, married Federico da Montefeltro, Duke of Urbino

* May 15 – Battle of Forlì between Guelphs and Ghibellines: the French army under Pope Martin IV is defeated by Guido I da Montefeltro.

* September 10 – Federico da Montefeltro, Italian mercenary ( b. 1422 )

* February – Guidantonio da Montefeltro, count of Urbino ( b. 1377 )

* September 29 – Guido I da Montefeltro, Italian military strategist ( b. 1223 )

It plays this role in Petrarch's Triumph of Chastity, and on the reverse of Piero della Francesca's portrait of Battista Strozzi, paired with that of her husband Federico da Montefeltro ( painted c 1472-74 ), Bianca's triumphal car is drawn by a pair of unicorns.

The reputation of the court had been established by Federico III da Montefeltro, a highly successful condottiere who had been created Duke of Urbino by the Pope — Urbino formed part of the Papal States — and who died the year before Raphael was born.

* Piero della Francesca ( Diptych of Duke Federico da Montefeltro and Duchess Battista Sforza of Urbino )

Having received the support of the archbishop of Milan and Giovanni Visconti, he defeated Giovanni di Vico, lord of Viterbo, moving against Galeotto Malatesta of Rimini and the Ordelaffi of Forlì, the Montefeltro of Urbino and the da Polenta of Ravenna, and against the cities of Senigallia and Ancona.

In the beginning Assisi fell under the rule of Perugia and later under several despots, such as the soldier of fortune Biordo Michelotti, Gian Galeazzo Visconti and his successor Francesco I Sforza, dukes of Milan, Jacopo Piccinino and Federico II da Montefeltro, lord of Urbino.

The daughter of Fabrizio Colonna, grand constable of the kingdom of Naples, and of Agnese da Montefeltro, Vittoria Colonna was born at Marinoa fief of the Colonna family in the Alban Hills near Rome.

Against Caesar Borgia the city was heroically defended by Giovanni da Montefeltro.

Federico II Paolo Novello da Montefeltro ( died c. 1370 ) was Count of Urbino from 1364 until his death.

He was the son of Nolfo da Montefeltro.

it: Federico II da Montefeltro