Some scholars have pointed out that Gallus' writing style resembles that of Hildebert of Lavardin (aka Hildebert of Tours) and have thought that Gallus had been educated at Le Mans or, according to Zathey, at Chartres or Bec in Normandy.
Beberapa ilmuwan telah menunjukkan bahwa gaya penulisan Gallus menyerupai Hildebert dari Lavardin (alias Hildebert dari Tours) dan mengira bahwa Gallus telah dididik di Le Mans atau, menurut Zathey, di Chartres atau Bec di Normandia.