Samuel Weakley was born April 9, 1787 and was a native of Cumberland County, Pa, of English ancestry, the family being among the first settlers of that county. After reaching his maturity he removed to Mercer County, with his brothers James and Robert and about 1817 purchased 200 acres of land in Slippery Rock Township, Butler County. He built his cabin on the farm (later occupied by Mrs. Jane Brown) and spent the remaining years of his life on that property. Samuel was a soldier in the War of 1812, and was a member of Convenanter Church.
Sarah Hogg, sister of Robert Hogg, was born in 1794 in County Donegal, Ireland.
Samuel and Sarah married had three children:
| Robert Weakley | |
| Jane Weakley | Married Mathew Brown. |
| Samuel Weakley | Married Susan Rigby and lived in Slippery Rock Township all his life. |
Samuel died August 1, 1866, and Sarah died November 4, 1870. Both are buried in Harmony Church graveyard in Harrisville, PA.