Children are listed here
https://archive.org/details/piersongenealogi00pier/page/12/mode/1up
No Isaac listed. No dates for Ruth (and most of the others). So where did your profile dates originate? You could check Barbour records (on Ancestry for CT) or just make the birth date after the marriage date of .... the earliest birth date I see is 1680.
You can get some child dates from http://trees.wmgs.org/familygroup.php?familyID=F33095&tree=Schi..., it’s a pretty reliable site.