Casey Coot
Casey Coot is a 
fictional character of the 
Scrooge McDuck universe created by 
Don Rosa.He first appeared in "Last Sled to Dawson", first published in 
June, 
1988. He is introduced as an unsuccessful gold prospector and friend of 
Scrooge McDuck during his years in 
Klondike. In need of money he sold to the significantly more successful 
Scrooge McDuck his share in 
Duckburg, 
Calisota, 
USA. His share included "Killmule Hill" which renamed to "Killmotor Hill" comprises the land where Scrooge's money bin stands on. He later appeared in 
The Life and Times of Scrooge McDuck Part 8 and 
Hearts of the Yukon. In 
The Life and Times of Scrooge McDuck Part 10 it is revealed that he and 
Grandma Duck are brother and sister. In 
Don Rosa's Duck Family Tree he is featured as a grandson of 
Cornelius Coot, a son of 
Clinton Coot and his wife 
Gertrude Gadwall. According to the tree he was married to  Gretchen Grebe and they had at least two kids named 
Fanny Coot and 
Cuthbert Coot. He is so the grandfather of 
Gus Goose. It has been suggested that he is also the grandfather of 
Kildare Coot although Rosa has not used the later in his stories or tree.