Was king David the 8th son in 1sam.16:10 or 7th son 1st chron.2:15 of the Nation of Isreal?

Question

the bibical account of King David being the 8th or 7th son is not clear.Did his father Jesse have two wives,or concubine?

Answer 1

Here's a family tree which shows that Jesse had one wife and David had 10. http://www.loebtree.com/kings.html

http://complete-bible-genealogy.com/name...

Answer 2

You might get a  much better response over in the *religion and spirituality forum*.