I'm also looking researching this family - most of what I have is from the census records.There was an Adam Woolheater born 1755 or 1756 who served in the Maryland Militia, and then moved to Huntingdon Co.,Pa around 1790.
He was listed in the 1800 census in Warriorsmark Twp, Huntingdon Co., PA, he had at least 3 sons and 3 daughters. From later census records I'm guessing that his sons were: George Woolheater born abt 1784, Maryland Henry Woolheater born abt 1786 or 1790, Maryland or PA Adam Woolheaterborn abt 1792 or 1794 PA
Adam Sr moved to Indiana Co. PA, and Adam Jr. remained in Huntingdon Co., and then moved to Blair Co PA before 1850.
In the 1850 census this family is listed in Snyder, Blair Co, PA: Adam Woolheater 57, 1792, PA Rebecca Woolheater 24, 1825 PA Saml Woolheater 21, 1828 PA Henrietta Woolheater 7, 1842 PA
In the 1860 and 1870 census the Samuel Woolheater family is listed in Boggs, Clearfield, PA Samuel H Woolheater b.1829 PA Mary M Woolheater b.1823 PA Jane K Woolheater b.1852 PA Josephine Woolheater b.1854 PA Nancy Woolheater b.1856 PA Alice Woolheater b.1858 PA Martha Woolheater b.1861 PA Barbara A Woolheater b.1865 PA Edith Woolheaterb.1872 PA
Samuel died before 1880, Mary M. Woolheater is listed in the 1880 census as a widow.They had a lot of daughters - is it possible that Sophia might have been a middle name?
Also, there is a rootsweb.com board for this family.I'd like to trade notes if you find anything more on this family.