Clark of Little Glen

[gena47]

I hope I have established my 7th gg father John Clark in Aylestone married Elizabeth Morton in 1720.  Looking back at the Clark's in Aylestone as it said g from Little Glen. Now trying to find John's parents, there are 2 possibilities of his birth First Jan 1682 parents Thomas & Frances. Other Feb 1686 father John no mother's name. both of Little Glen.
Think it could be Thomas as they had a son Richard before John was born. Thomas has called his children child Thomas 1673, William 1676, Richard born 1679, John 1682 and  Frances 1684.  If I have it right and John and Elizabeth went to Willoughby between 1723-27.  Their first son was Richard, then Thomas, Mary then Joseph.  Going off this Richard and Thomas crop up in both Thomas and Frances children and John and Elizabeth children. 

With John being the father can only find John born 1686 and then Thomas 1690.

Anyone have an opinion or am I on a wild goose chase