Perhaps this is your Pressley & Frank Williams

1900 United States Federal Census
about Pressley Williams
Name: Pressley Williams
Home in 1900: Ohio, Pulaski, Illinois
Age: 55
Estimated birth year: abt 1845
Birthplace: Kentucky
Relationship to head-of-house: Head
Spouse's name: Cornelia
Race: Black

Household Members:
Name Age
Pressley Williams 55
Cornelia Williams 38
Frank Williams 16
Fred Williams 14
Mary C Williams 6