thomas family that is in petersburg va in the 1860

i am looking for info for joseph m thomas that was in the civil war co d 4th inf. va and married susanna julia richards.
I have a fred. s thomas that owns a plot in blandford cemetery petersburg va and this has joseph w thomas and myrtle t. vaughan. I am to assume that he may be one of joseph and julia thomas's childrens??? please reply to z642000@aol.com thank you kindly buffy anxious to solve this puzzel to the family tree.