 This turned out to be a bad omen, because on the way downriver with the Imperial fleet from Tiel to Vlaardingen the bishop fell ill. At Heerewaarden he left his ship and died on the very day of the battle.The Cambrai Chronicle states that in Vlaardingen "a thousand have put even twice ten thousand to flight", which would suggest 1,000 West Frisian versus 20,000 Imperial troops.However, this is very likely a literary quotation from the Biblical Book of Deuteronomy (32