Jon's family are O'Hara and Stuart on the maternal side and Johnson and Biggs on the paternal side. Jo's are the Armes and Truelove on the paternal and Williamson and Baggaley on the maternal.
The family tree's are generated from our genealogy databases, not the prettiest things in the world, but it does have everything we know so far and we hope to expand the description to help work you work out what is going on. We have changed the format of the family trees to get rid of frames so it is easier to link into particular people and hopefully get a few more Google hits
The family history data is stored using GEditCom to produce valid GedCom files which you are more than welcome to use in your own research