Thomas Parkes:
Henry's older brother, worked in the coal-mining industry.
William Parkes:
Henry's younger brother, emigrated to Australia in 1839 and became a successful businessman in Sydney.
Mary Parkes:
Henry's younger sister, married a man named John Smith.
Ann Parkes:
Henry's younger sister, married a man named John Harris.
Eliza Parkes:
Henry's younger sister, married a man named John Hughes.
Sarah Parkes:
Henry's younger sister, married a man named John Baker.