The painter whose work appears in the Castello Sforzesco in Milan is known as the father of what? 
Leonardo da Vinci: Leonardo di ser Piero da Vinci (] ; 15 April 14522 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian Renaissance polymath whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. Leonardo da Vinci:  He has been variously called the father of palaeontology, ichnology, and architecture, and is widely considered one of the greatest painters of all time.
i don't know