Matilda Archer, the second Matilda in James Archer's siblings, the first one having died some years before she was born. She married John Sanders, who was (according to WGRA's manuscript notes) a steward of the Bulliingdon Club, that ghastly manifestation (exposed in the play: "Posh") of establishment juvenilia at Oxford University (see Wikipedia entry pasted below):
The Bullingdon Club is an exclusive all-male dining club for Oxford Universityundergraduates, though it is not officially recognised by that institution. It is noted for its wealthy members, grand banquets, boisterous rituals and destructive behaviour, such as the vandalising ("trashing") of restaurants and students' rooms. Many local outlets refuse to host these events.