First given name from baptism record of son found in the Flintshire, Wales, Anglican Baptism records and found in September 2023:
Name: William Roberts
Birth Date
1839
Baptism Date: 28 July 1839
Baptism Place: Hanmer, Flintshire, Wales
Father: Thomas Roberts
Mother: Eliza Roberts
Abode: Willington, Flintshire, Wales

Place of birth, estimated year of birth, from the 1851 Wales Census taken on the night of 30 March 1851 for the Overton Parish, Flintshire, Wales, found in September 2023:
House: Pant Goulton
Thomas Roberts, Head, Married, age 55, Farmer of 50 acres, Born Worthenbury Flintshire Wales [circa 1796]
Eliza Roberts, Wife, Married, age 35, Born Worthenbury Flintshire Wales [circa 1816]
Mary Roberts, Daughter, age 13, Scholar, Born Willington Flintshire Wales [circa 1838]
William Roberts, Son, age 11, Born Willington Flintshire Wales [circa 1840]
John Roberts, Son, age 9, Born Willington Flintshire Wales [circa 1842]
Jane Roberts, Daughter, age 6, Born Willington Flintshire Wales [circa 1845]
Thomas Roberts, Son, age 5, Born Overton Flintshire Wales [circa 1846]
Richard Roberts, Son, age 7, Born Wellington Flintshire Wales [circa 1844]
Robert Roberts, Son, age 3, Born Overton Flintshire Wales [circa 1848]
Eliza Roberts, Daughter, age 1, Born Overton Flintshire Wales [circa 1850]

This Denbighshire, Wales, Anglican Marriage records found in September 2023 is thought to be for our Thomas and Eliza:
Groom: Thomas Roberts
Bride: Eliza Welsh
Marriage Date: 23 January 1836
Marriage Place: Ruabon, Denbighshire, Wales
Residence Place: Ruabon