Count Odo Or Silly Hodor?

Count Odo of Paris (born c. 853) is a historical character, an ancestor of the subsequent Capetian dynasty of French kings. He successfully defended Paris against a Northmen army under a figure known as Sigfred, in the Viking siege of AD 885-86. However, the (succesful) siege attributed to Ragnar Lodbrok took place forty years prior, in AD 845, when Odo of Paris was not even born yet.

The father of the historical Count Odo also was not named Odo, but Robert. The Count of Paris at the time of Ragnar's historical siege was one Leuthard II, but his role in the event, if any, is uncertain.

Hodor is a recurring character in the first, second, third and fourth seasons. He is played by guest star Kristian Nairn and debuts in the series premiere, though he does not speak until "Cripples, Bastards and Broken Things." Hodor is a simpleminded servant of House Stark at Winterfell working in the stables. He aids Bran Stark's mobility after he sustains a paralyzing injury when falling from a tower by carrying him from place to place, in his arms, in a basket on his back, and in a wheelbarrow. After Winterfell is captured by Theon Greyjoy, Hodor escapes with Osha, Bran, and Rickon leaving a trail, then back tracking to hide in the Stark crypts. When emerging to find Winterfell burned, he leaves with Osha to take Bran and Rickon north to the Wall to Jon Snow.