Question: The back of the Goes Forth DVD cover lists Tony Robinson's character as 'Private S. Baldrick'. What is Baldrick's first name?
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.
Answer: It's not known what Baldrick's first name is. Sod off is a way of telling someone to go away/get lost, so when the kids said, "We know. Sod off, Baldrick," they were essentially telling him to go away.
This has been posted before. Baldrick thinks that's his name. Because he is stupid, he thinks they said his first name. It's a joke.
lionhead