HELP HELP, I Hit a Brick Wall

Hi everyone, I'm new here.

I'm Charles J. O'Berry (Berry) from Arizona. I'm looking for some help in my research.

My grandfather was Charles Otto Berry Sr. from Morgan City, Louisiana. He was born Oct 10, 1900 in Morgan City. His mother was Lydia Caroline Written and his father was Millard Fillmore Berry Sr.

Lydia passed away soon after the birth of my grandfather and he was raised by an uncle who's name was Bigler.

What I am looking for is the name of Millard Fillmore Berry's father. He may have been from PA and lived there in Morgan City. I can't move on until I get his name.

I have a Berry Family Tree on Ancestry.com if anyone is interested.

Any help from anyone would be greatly appreciated.

Looking forward to hearing from you.