commemorates all five. Catherine, Princess of Wales Research revealed in 2014 that Catherine, Princess of Wales is a descendant of the Martineau family; her great-grandmother, Olive Middleton (née Lupton) was the daughter of Francis Martineau Lupton (1848–1921), who had attended political conferences in Birmingham with his Martineau alderman cousins. Legacy There is a society devoted to the Martineau family of Norwich. "Specifically, the Society aims to highlight the principles of freedom of conscience advocated in the nineteenth century by Harriet Martineau and her brother, Dr. James Martineau". The National Portrait Gallery holds nearly 20 portraits of James and Harriet Martineau. The siblings' great-nephew, Francis Martineau Lupton, was the great-great-grandfather of Catherine, Princess of Wales, the gallery's patron. There was a school named after Sir Wilfrid Martineau, now subsumed within the International School, Birmingham. References English families Huguenot families Catherine, Princess of Wales English Unitarians Burials at Key Hill Cemetery