Reading today that the most popular name for boy babies last year was Harry (see here) reminded me about the very old verb to harry. It comes originally from a root meaning 'army, host' and, indeed, in Old English there was the word here meaning 'army', which was the word usually chosen to describe the Viking invading armies. The name of the Anglo-Saxon rebel leader Hereward the Wake is related. The name of the Essex port Harwich means 'army camp', and Harlow, also in Essex, means 'the hill associated with an army'. Harbour, too, spelled in late Old English hereberȝe (army protection), derives from the same root.
Nowadays harry can mean to pester or torment, but a thousand years ago or so, when an army harried, it ravaged, pillaged and devastated completely.
The man's name Harry is not from the verb to harry, but is a familiar form of the name Henry, which was originally French. The Middle English pronunciation of the French Henri with the nasal vowel was Herry, which eventually became Harry. It's always been a common name, hence the expression every/any Tom, Dick and Harry ie everyone or anyone.