Posted by C. Smith on May 01, 19100 at 18:47:29:
In Reply to: Sir Isaac's DOB posted by Allen on May 01, 19100 at 13:46:50:
Calendar used at that time states he was born on Dec. 25 1642. The corrected Gregorian calendar (not adopted in England until 1752) states he was born on Jan 4 1643.