Webster’s Revised Unabridged Dictionary · 1913
Bounden
Bound′en (bound′'n), p. p & a. [Old. p. p. of bind.]
1. Bound; fastened by bonds. [Obs.]
2. Under obligation; bound by some favor rendered; obliged; beholden.
This holy word, that teacheth us truly our bounden duty toward our Lord God in every point. Ridley.
3. Made obligatory; imposed as a duty; binding.
I am much bounden to your majesty. Shak.