WikiTree is a collaborative 'single tree' genealogy site. Lots of people relating to Fremantle are represented there, and anyone can contribute more. If you edit either here or on WikiTree, please consider keeping the other up to date with any changes (although generally, we've been adding more detailed biographies here on Freopedia, and only adding basic birth and death data on WikiTree).
There is also a tool at https://wabmd.toolforge.org that can be used to link more.
There are currently 480 people recorded here, of whom 439 are missing a WikiTree ID.