Complex sentence: Leonard continued to live at Monk's House until his death in 1969, and played an active role in village life; both he and Virginia had been members of the Socialist Party, and he became a manager of the village school in Rodmell in the 1930s.
Split into simpler sentences: Leonard continued to live at Monk's House until his death in 1969, and played an active role in village life. Both he and Virginia had been members of the Socialist Party, and he became a manager of the village school in Rodmell in the 1930s.