Could ‘The’ be used instead of ‘family’ or ‘family tree’ in the article names of the family trees so:
◾Abbasi family becomes The Abbasis
◾Allen family becomes The Allens
◾Banks family becomes The Banks
◾Beale family becomes The Beales
◾Branning family tree becomes The Brannings
◾Butcher family becomes The Butchers
◾Carter family tree becomes The Carters
◾Cross family becomes The Crosss
◾Masood family becomes The Masoods
◾Medeemey family becomes The Medeemeys
◾Smith Family (1980s) becomes The Smiths (1980s)
◾Smith Family (2000s) becomes The Smiths (2000s)