I too had information from parish records, a baptism that did not appear on the IGI site, I had searched all of that looking for an ancestor (my gt gt grandmother) eventually, with the help of a very kind lady trascribing the Buckinghamshire baptisms, I finally found her, baptised in 1814, I was then able to piece together more about her family, but this is still ongoing, many details yet to be discovered, her father was a soldier in the East Indies for over 15 years and I`m now searching for more children, possibly they were born overseas, but I have yet to find out. I also need to find out when & where her father died, he was not in the army then, having asked for his discharge, and as a result lost his pension.
Because however, I have many other facts to dig out, this section has been left on hold for a while until I can devote more time to it, and also find out where I can obtain more info.
This is the fascinating aspect of family research, there is never an end to it, is there.