Sentence:  And if Robin should be cast / Sudden from his turfed grave, / And if Marian should have / Once again her forest days, / She would weep and he would <WSD>craze</WSD>: [...] 
Meaning of the word marked with <WSD> tags:  To be crazed, or to act or appear as one that is crazed; to rave; to become insane.