Sentence:  For euer I supoosed that he had ben to yonge and to tendyr to take vpon hym these aduentures / And therfore by my wille I wold haue dryuen hym aweye for <WSD>Ialousy</WSD> that I had of his lyf / for it maye be no yong knyghtes dede that shal enchyeue this aduenture to the ende<!--Prior quote:And therefore by my wyll I wolde have dryvyn hym away for jelosy that I had of hys lyff--> 
Meaning of the word marked with <WSD> tags:  A close concern for someone or something, solicitude, vigilance.