Hi Ed,
Working forward in time can be problematic. Not impossible, but certainly creates a greater chance of losing your way.
There are a few questions to ask yourself.
1) What period in time are you talking about?
2) Do you know the names of both parents?
3) Do you know when they married?
4) Do you know where they married?
5) Do you know where they lived after they were married?
6) Are you absolutely certain that this person (or these people) are actually relatives of yours?
7) Have you tried checking the births records of the St Catherine\'s House indexes?
These should be available at a library close to you. If you can find the marriage of the parents, you will need to check the birth records for a period of up to 25 years following the marriage. If you have the names of both parents, and the are they lived in, this should be relatively easy. Time consuming, but relatively easy. Don\'t bother trying to use the online facilities for St Catherine\'s House. You only get five look-ups for £15.00. That most certainly is NOT worth it. You are looking at the need to go through at least 100 rolls of microfilm to be sure you have not missed any children.
But, the effort should bear fruit.
Keith.