The info I have is from IGI and pedigree chart. IGI has not let me down so far on dates, the most it has been out by is 1 year. That is why I am very confused.
I will give you an example:- Henry Gawne 1820 arbory parents William Gawne and Jane Costain, go on to pedigree chart and it gives the d.o.b. of parents, but when I look for William on his own there is no record for 1780, that is why I am very confused and appreciate any help that can solve my problem.

Thanks in advance.
Jackie.