John and William Moulton

I am related to John and William. They were brothers but only step-brothers. Their father, Robert IV 1565-1633, was twice married. Married to John's mother, Mary Smith 1579-1636 on Mar 15 1579. But was first married to William's mother is Anne Greene 1601-1650 on Sept 24 1623. Both brothers immigrated to the US in 1637, the year after Mary's death. Katrina, Are you related and if so how? Where their lines separate their ancestors differ. Do you know which is correct?

I have included Williams Last Will and Testament from Ancestory