Keep in mind the suffix of Jr., or Sr. may have been a result of the miss-merge.
Looking in the Index for New England Marriages Prior to 1700, there is no info for Rundlett or any other spelling on Pg.642
No preview for Pg.212 or 687 which has Charles Runlett
another link for info
http://ww.genealogyofnewengland.com/f_1bd.htm#168