There is no proof he was a belted knight, he is not in the records. The only proof there is that he was a Knight of the Shire many times, that he held a knights fee piece of land that was transferred to him, such as government land but when you took this land you had to have a alligence to the King and pay taxes to the King.
I will from time to time keep going through records for his name however, he is well documented.