Complex sentence: The ten men named themselves the Trinity College tiddlywinks, or the "Trinity Tiddlers", however, it is revealed in the fourth series' finale that George is only surviving member of the group.
Split into simpler sentences: The ten men named themselves the Trinity College tiddlywinks, or the "Trinity Tiddlers". It is revealed later, in the fourth series' finale, that George is only surviving member of the group.