I have records of a James Calvin who died 1846 in Crawford Co., PA but my records do not show him born ca 1767 in Somerset, PA - more likely ca 1764 in Chester Co., PA. I do show that he had one descendant named Leonard F. Calvin b. 12 Mar 1890; marr. 1912 Katherine Baltz. I don't know if this is your "Lenard" Calvin as you didn't give us any information about him.