Possible Clues:

• William —, English poet
• Intimidate a Georgian hymn-writer
• William --, poet and hymn-writer 1731-1800
• Publication initially shrink-wrapped for poet
• English poet who wrote the comic ballad 'John Gilpin'
• 18th-c. poet William
• Manager keeping in with linesman
• Threaten each poet
• William -, John Gilpin poet
• C18 poet; sounds like barrel-maker