Complex sentence: Born Constance Place in Lytham St Annes, Lancashire, she comes from a political family: her father, Allen Place, was an activist in the Independent Labour Party, as was his mother, Dinah Place, who was also a suffragette.
Split into simpler sentences: Born Constance Place in Lytham St Annes, Lancashire, she comes from a political family. Her father, Allen Place, was an activist in the Independent Labour Party, as was his mother, Dinah Place, a suffragette.