Continuing on from the above, I went back and searching for Andrew Lynd with Londonderry, Ireland as the place and 10 results appeared including 2 deaths for Andrew Lynn aged 2 with no year and a birth for Andrew Lynn birth in 1866 which may be the missing record I mentioned in above post.
In most databases doing the broadest search with just the name should give the most results and then narrowing down the search criteria with a place should give fewer results but this doesn't seem to be the case here.