Thank you. Legend has it, Rollo was named the Walker because he was so huge no horse could support him!
After the treaty had been concluded, the French King ordered Rollo to kiss his foot, to demonstrate submission. Rollo refused, but ordered another Viking warrior to do so. The Norseman grabbed the King's foot and jerked it up high in the air to kiss it, rather than kneeling down. The King of France ended up on his arse in the mud!