Sentence:  And yf I maye fynde suche a knyghte that hath all these vertues / he may drawe oute this swerd oute of the shethe / for I haue ben at kyng Ryons / it was told me ther were passyng good knyghtes / and he and alle his knyghtes haue assayed it and none can <WSD>spede</WSD> 
Meaning of the word marked with <WSD> tags:  To succeed; to prosper, be lucky.