 Josce 's grandson Fulk fitzWarin , who died in 1258 , is ostensibly the hero of a lost romantic poem called Fouke le Fitz Waryn . The work survives as French prose in a loose corpus of medieval literature known as the Matter of England . However , it appears to confuse events of Fulk fitzWarin 's lifetime with those of his grandfather 's . Other errors in the work include transposing some of the Welsh Marcher barons of King Henry I of England 's reign into nobles of William the Conqueror 's time , and omitting an entire generation of fitzWarins . Although scholars believe Fouke le Fitz Waryn draws on genuine tradition , the difficulty in separating the fitzWarin biographies makes it a problematic source . 
 Josce <a href='null_genetive' title='1'><mark>'s</mark></a>grandson Fulk fitzWarin , <a href='null_relcl' title='2'><mark>who</mark></a>died in 1258 , <a href='drop_aux' title='3'><mark>is</mark></a>ostensibly the hero of a lost romantic poem called Fouke le Fitz Waryn . The work <a href='uninflect' title='4'><mark>survives</mark></a> as French prose in a loose corpus of medieval literature known as the Matter of England . However , it <a href='uninflect' title='5'><mark>appears</mark></a> to confuse events of Fulk fitzWarin <a href='null_genetive' title='6'><mark>'s</mark></a>lifetime with those of his grandfather <a href='null_genetive' title='7'><mark>'s</mark></a>. Other errors in the work include transposing some of the Welsh Marcher barons of King Henry I of England <a href='null_genetive' title='8'><mark>'s</mark></a>reign into nobles of William the Conqueror <a href='null_genetive' title='9'><mark>'s</mark></a>time , and omitting an entire generation of fitzWarins . Although scholars believe Fouke le Fitz Waryn <a href='uninflect' title='10'><mark>draws</mark></a> on genuine tradition , the difficulty in separating the fitzWarin biographies <a href='uninflect' title='11'><mark>makes</mark></a> it a problematic source . 
Josce  grandson Fulk fitzWarin , died in 1258 , ostensibly da hero of a lost romantic poem called Fouke le Fitz Waryn . The wrk survive as French prose in a loose corpus of medieval literature known as tdaMatter of England . However , it appear to confuse events of Fulk fitzWarin  lifetime w/ those of his grandfather  . Other errors in the wwrkinclude transposing sum of the Welsh Marcher barons of King Henry I of England  reign into nobles of William the Conqueror  time , and omitting an entire generation of fitzWarins . Although scholars believe Fouke le Fitz Waryn draw on genuine tradition , the difficulty in separating the fitzWarin biographies make it a problematic source .