There is a Jacob Martin in 17th District Carroll SC in 1860. I think his wife is named Dolly. I do not think it is Polly. He is 75 b. SC and she is 67 b. SC. Have you researched this Jacob? There is a James Martin age 23 b. TN next door and next door to James is a Cantha Martin(F) age 52 b. SC. Cantha probably as sister in law to Jacob. Don't know