Possible Clues:

• Public official authorised to administer oaths
• Certifier of deeds etc.
• There's nary a one to turn to work indeed
• Legally, there's nothing for the pitch over the Wye
• In law there isn't any pitch over the Wye
• He's no sailor to start with, that legal man isn't
• Official signer
• - - public: official
• Person empowered to certify document's validity
• One authorised to perform certain legal functions