Corrected entry: When Edmund goes to see the wise woman, she advises that one option to get out of his predicament would be to "kill Bob". He hasn't told her Bob's name at this point, only that he is in love with his manservant. Although the "wise woman" is a crone and could be thought to have insight of this nature, she's portrayed as far too rubbish.
Eliza
17th Nov 2003
Correction: The first thing she says to him is "Hail Edmund, Lord of Adders Black", she couldn't know who he was since she's a recluse and Edmund tells Baldrick that he'd rather trust Dr Leech then some old crone - so she has some ability in the mystical to know his name.