In order to help further, and double-check information, you may went to order birth, marriage and death certificates.

I'll tell you today about birth certificates. Registration started in 1837, although not everyone registered a birth. You will need to check an index, online or at a local record office (there may be a charge online). You will need to look under the surname, and the year is split into quarters. Look at the quarter after which they were born. If not there, try the quarter they were born in, and the quarter after the first one checked. If you don't know what month he/she was registered in, you'll just have to check the year. Unfortunately, there may be people with the same name. You will then, unfortunately, have to go through a process of elimination (trying the person on the index, registered in the area, closest to wherre you thought they'd been born). There is no guarantee, though, that any certificates ordered are going to refer to any of the people you are looking for.

Once you have found a reference number, you can then use it to order a copy of a birth certificate from the General Register Office. This can be done online or through the post. It will tell you who that person's parents were etc.