Kermit

It's unclear if they're looking for my ancestor whose name is most out of the ordinary, or the name of my most out of the ordinary ancestor.

My great-grandma’s name was Santa Kum

Not my ancestors but in Texas there is a family who named thier daughters Ima and Ura their last name is Hog.
I do have an ancestor who is from my Dad's side. Named Dickey Neighbors lol.

Krum stump, or Adolf stump, you pick which is better

I had a great grandmother named Moriana Badickan

I have a great uncle Merlin, and his brother Merle

One of my friend's grandmas was named Edelgunden, and this is that friend's 4th middle name (she has 1 first name and 6 middle names).
And when my grandpa worked in schools, he encountered two sisters, Rose & Désirée Moncu, which in French sounds exacly like "My pink ass" and "Desire my ass". Their parents where assholes.

My ten times great aunt's name was Pocahontas:/ more cool than weird