Kathleen Megan Folbigg (née Donovan; born 14 June 1967) is an Australian woman who was convicted of murdering her three infant children, Patrick Allen (at age eight months), Sarah Kathleen (at age ten months) and Laura Elizabeth (at age nineteen months). She was also convicted of the manslaughter of her fourth child, Caleb Gibson (at age nineteen days). The deaths took place between 1989 and 1999. Her husband contacted the police after discovering her personal diary.Folbigg is presently imprisoned, sentenced to forty years with a parole period of 25 years. She will be eligible for parole in 2028.