I have looked at the information you have supplied, and agree that there is a possiblity of a connection somewhere.However, I am having problems working out where that connecton could be.
I certainly have an Aaron in my family, great grandfather.However, he was christened Richard Aaron.There are no Milladay's that I can find.However, John and Elizabeth are also strong in my tree.Unfortunately very common names!
The Peter and the James you gave me are very strong possiblities.Peter born with the same date of birth as myself.Scarry!!!Either of the Richard's could be possible.However, one was chrisitened on the day he was born, which indicates that they did not feel the infant would survive.
I would need to go to LDS church to look at the birth records, (when I've got the time!!!), to check if the mothers Betty and Elizabeth were indeed the same person.
Could you give me more of an idea where you think the connection may lie.Perhaps James 1756 had more children than you know about.Do you know what his wife was called?