John Horace Round, Dictionary of National Biography… (1889)
“ The royal garrison of the castle fled for refuge to the abbey, but Robert soon pursued them thither, and, entering the chapter-house at the head of his followers, demanded that the fugitives should be handed over. The terrified monks with difficulty induced him to be content with the surrender of their horses. He was already plundering far and wide, when Stephen, on his way to attack Trowbridge, heard of his deeds, and, turning aside, laid siege to the castle. ”
