The dates given for Elizabeths marriage and John's birth are not consistant with normal ages. If Elizabeth really married in 1644 she was probably 14 to 19 years of ae at that time and would have been born between 1630 and 1634. If John was Elizabeth's brother then he would have been born betwen 1620 and 1640 and their father Robert would have been born about 1590 to 1610. Do you a source for the dates that you have listed? I would love to hear more about these people. With love in Christ,

George