One company promotes what they claim is the Chevallier coat of arms. On the face of it, such a thing is unlikely, since the name itself is an honorific roughly equivalent to 'Sir', as in 'Sir Rollo of Rottinngham'. The coat of arms would attach to 'Rottingham', not to 'Rollo' and certainly not to 'Sir'. However, there are people with the family name who claim it as the start of a longer aristocratic title.

Our branch is descended from a notary in the town of Fougères, a French town in Brittany. He may have been from another town in Brittany however.

And no, no relation to Maurice......