I added source information for Abraham DeForest 1767-1842 to the United Empire Loyalists directory. I also located a land petition for his son Simon DeForest 1904, Toronto.
With these source records other people may be able to document their Loyalist linage to apply for a United Empire Loyalist Certificate. You need to have proof documentation all the way to yourself to apply for a certificate and you have to join the United Empire Loyalist Association. Those who can prove they are descendants of Loyalists are legally allowed to use the postnominal initials 'UE' after their name.
http://www.uelac.org