The widow of wealthy Australian mining company owner, Lang Hancock. She is known for being a socialite and spends her time galavanting amidst the upper crust of society in Perth and Melbourne, Australia.
She was born in the Philippines and lived in several other countries before settling in Australia, where she secured a position as the maid of her future husband, Lang Hancock.
Her stepdaughter accused her of being wholly or partially responsible for Lang Hancock's passing; however, the coroner ruled that he had died of heart disease.
She married Lang Hancock, a man nearly forty years her senior, in 1985. The two built and lived in a mansion that they modeled after Tara, the plantation house in Gone with the Wind.
Porteous and her one-time stepdaughter, Gina Rinehart, were involved in a drawn-out legal battle over the death of Rinehart's father and the division of his wealth.