Thought I’d mention it since you brought up extra large swords, but while while the humongous weapons found in fantasy did not exist, particularly large swords were occasionally made, such as this sword. That sword was supposedly wielded by the Frisian freedom fighter Pier Gerlofs, better known as Grutte Pier. The word is approximately 2.15 meter long and weighs around 6.6 kilograms. They were still very rare though.