Rob·ert I 1 (rŏb'ərt) Duke of Normandy (1027-1035) who named as his heir his illegitimate son William, the future William the Conqueror of England.
Rob·ert I 2 (rŏb'ərt) King of Scotland (1306-1329) who defied Edward I of England by having himself crowned and won Scottish independence from England in a battle at Bannockburn (1314).