Complex sentence: Born in London to an English father and Spanish mother, she was the youngest of three children; her older sister, Jacqueline Nearne, and brother, Francis Nearne would also become SOE operatives.
Split into simpler sentences: Born in London to an English father and Spanish mother, she was the youngest of three children. Her older sister, Jacqueline Nearne, and her brother, Francis Nearne, would also become SOE operatives.