Baldrick: You could have someone else fight the duel for you.
George: But I'm the Prince Regent! My portrait hangs on every wall.
Blackadder: Answer that, Baldrick.
Baldrick: Well, my cousin, Bert Baldrick, Mr. Gainsborough's butler's dogsbody, says that all portraits look the same nowadays, since they're painted to a romantic ideal, rather than as a true depiction of the idiosyncratic facial qualities of the person in question.
Blackadder: Well, your cousin Bert obviously has a larger vocabulary than you, Baldrick.
Blackadder: Baldrick, does it have to be this way? Our valued friendship ending with me cutting you up into strips and telling the prince that you walked over a very sharp cattle grid in an extremely heavy hat?
Blackadder: Good day, cousin McAdder. I trust you are well.
McAdder: Aye, well enough.
Blackadder: And Morag?
McAdder: She bides fine.
Blackadder: And how stands that mighty army, the clan McAdder?
McAdder: They're both well.
Answer: The closest we ever get to knowing his first name is in series 3, when he claims it's "Sod Off". Blackadder asks him in series 3 where this came from, and he replies "Well, when I was a kid, living in the gutter, I'd go up to the other kids and say 'Hello, I'm Baldrick'. And they'd say, 'Yes, we know. Sod off, Baldrick.'" The S in this series is likely a reference to that, but it's not addressed, and given this Baldrick is clearly different from the series 3 Baldrick, we can't draw a direct link.
Shay