Judging by his surname, he is likely the owner of Critchley's Ranch, one of the many ranches in New Austin, or a family member of the owner.
Interactions
Edgar can commonly be found working on his ranch. However, he has been known to frequent Blackwater. He can sometimes be found playing Horseshoes at Rathskeller Fork.
Edgar can be encountered as a kidnapper in th "Kidnapping" Random Encounter.