In the 1810-1820-1830-1840 census in Cumberland Co.,PA where your Joseph was born is listed a William Calvert each yr(you have to use soundex sometime) then in 1850 they are gone. Then I checked the Find-A-Grave and they(William and wife Elizabeth)are there in Cumberland County,Saint Peters Cemetery in Frankford,Cumberland Co.,PA. He died in 1847 and she in 1848.
Name: Joseph Calvert Gender: Male Burial Date: Burial Place: Death Date: 30 Aug 1884 Death Place: Tully Tp., Van Wert, Ohio Age: 72 Birth Date: 1812 Birthplace: Cumberland Co., Pa. Occupation: Farmer Race: White Marital Status: Married