Nipper Adams Dates Help

my family line starts with nipper adams born jan 1 1800 in halifax va...died 1862 in alabama...i need birthdates from his father and mother nipper and mary polly farmer all the way to Capt Robert Napier...I got some dates from the mormon website www.familysearch.com but they are wrong on some of their information....i'll be more than happy to share any information i have.
thanks for your help.