Note 342 — Chapter XII · THE LATER REIGN OF WILLIAM IN NORMANDY.[159] 1051–1066.
Reading edition
Roman de Rou, 8628;
“Cil del chastel oïrent tost
La garnisun è li grant ost.”
The “tur” is the castle of Arques; the “chastel” is the wooden castle of the besiegers.