The Social Security Death Index has this information about your husband’s grandfather:
William Farleigh, b. 15 July 1920, d. March 1985.The last address record was Wellston, Jackson Co. OH.His SS number was issued by the state of West Virginia.
You could send for his SS application--it should have his parents names, including maiden name of his mother.However, the cost is $27.00 if you provide his SS number, and it might not give any more information than you found on his marriage record.
There were many Farleys in early Logan County, most of them descendants of Thomas and Jane Farley who arrived in Virginia in 1623 from England.Since William T. Farleigh (Farley) has a more recent birth date it might be difficult to trace him back. I will see what I can find.