 Three of Galileo 's five siblings survived infancy . 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 fire to develop inventions that would bring him additional income . 
