Sentence:  I presently wished, <WSD>would</WSD> that I had been in their clothes! <WSD>would</WSD> that I had been born Peter! <WSD>would</WSD> that I had been born John! 
Meaning of the word marked with <WSD> tags:  Might wish ( + verb in past subjunctive); (that)) in the sense of "if only". (from 13thc.)