Hereward the Wake

 
Pronunciation: /ˈhɛrɪwəd/
  • (11th century), semi-legendary Anglo-Saxon rebel leader. A leader of Anglo-Saxon resistance to William I’s new Norman regime, he is thought to have been responsible for an uprising centred on the Isle of Ely in 1070.

Origin:

the Wake apparently in the sense 'the watchful one'