Titus McDuck

Dingus McDuck, nicknamed "Dirty Dingus", was created by Don Rosa for his Duck Family Tree and has not appeared in person. Dingus, who was Scrooge McDuck's grandfather, was a coal miner. He married Molly Mallard and had three sons: Angus McDuck, Jake McDuck, and Fergus McDuck.

In a 1960s story by Bob Gregory and Tony Strobl Scrooge's grandfather is referred to as Titus McDuck.