Andrew Kerr, VII - Discrepancies in this area - birth and death either incorrect or relationships incorrect or both

This profile is stating that Adnrew Kerr VII died aged 2 and yet he married and had children?
Further down the tree is also suspect....
Did Mary Kerr marry both Robert and Ralph Kerr?
Andrew Kerr of Auldtounburn seems all wrong as well. His wife, Mary Herries was grandaughter of William Douglas whereas the MP for Andrew Kerr of Auldtounburn has him married to daugther of William Douglas and Margaret Tweedle - there is no record of a Mary Herries.
I will also post this discussion on his profile to get wider opinions.