What does Harold mean?
From Old English 'here' (army) and 'weald' (ruler, power), 'ruler of the army'; cognate with Old Norse Haraldr. Borne by Harold II, the last Anglo-Saxon king of England.
What does Wyatt mean?
From the Old English personal name Wigheard, combining 'wig' (war) and 'heard' (hardy, brave), hence 'brave in war'. Later also a medieval diminutive of Guy/William.