Kathleen Megan Folbigg is an Australian who was convicted of murdering her three infant children, Patrick Allen, Sarah Kathleen and Laura Elizabeth. She was also convicted of the manslaughter of her fourth child, Caleb Gibson. The deaths took place between 1989 and 1999. Her husband contacted the police after discovering her personal diary. Folbigg is presently imprisoned, sentenced to thirty years, twenty-five years no parole.