Complex sentence: Spaldington Hall, an Elizabethan building was a seat of the Vavasour family, In 1838 the Hall was demolished, by 1850'Hall farm' (or'Old Hall farm') had been built on top of it.
Split into simpler sentences: Spaldington Hall, an Elizabethan building was a seat of the Vavasour family, In 1838 the Hall was demolished. By 1850'Hall farm' (or'Old Hall farm') had been built on top of it.