If ypu need to dig further than you have done ueisng the online sources you need to become a member of your local family history society
www.ffhs.org
should list your county society, you also will have to find out which County Record Office (s) you need for researching Wills before 1858, manoral records, parish records, quarter seesion records and land tax assessments, tithe maps and earlier census returns than 1841 (census returns date back to the 1600s).