Galileo Galilei was born on 15 February 1564, in Pisa, Italy, the first of six children of Vincenzo Galilei and Giulia (née Ammannati), who had married in 1562. However, only three of Galileo's five siblings survived infancy.
From his earliest childhood, Galileo was remarkable for intellectual aptitude as well as for mechanical invention. His favorite pastime was the construction of original and ingenious toy-machines, but his application to literary studies was equally conspicuous.
The youngest, Michelangelo (or Michelagnolo), also became a noted lutenist and composer although he contributed to financial burdens during Galileo's young adulthood. Michelangelo was unable to contribute his fair share of their father's promised dowries to their brothers-in-law, who would later attempt to seek legal remedies for payments due. Michelangelo would also occasionally have to borrow funds from Galileo to support his musical endeavours and excursions. These financial burdens may have contributed to Galileo's early desire to develop inventions that would bring him additional income.
When Galileo Galilei was eight, his family moved to Florence, but he was left with Jacopo Borghini for two years.