Hi,
2. Gads-bud -- Some sort of oath, like "Good God". "Gads" is probably euphemistic for "God's"; could "bud" be for "body"? I'm guessing...
God's blood.
6. Zoons -- Some sort of oath, I'd guess.
Zounds. (a contraction from the oath 'By God's wounds'.)
It sounds like someone heard these words in a historical movie, and wrote them down with incorrect spelling.
Clive