Timeline of Kathleen Folbigg's case

A TIMELINE OF MAJOR EVENTS IN KATHLEEN FOLBIGG'S LIFE:

* JUNE 14, 1967 - Kathleen Megan Donovan (later Folbigg) born

* JANUARY 8, 1969 - Folbigg's mother murdered by her father

* 1987 - Kathleen marries Craig Folbigg

* FEBRUARY 20, 1989 - Caleb Folbigg dies aged 19 days

* FEBRUARY 13, 1991 - Patrick Folbigg dies aged eight months

* AUGUST 30, 1993 - Sarah Folbigg dies aged 10 months

* MARCH 1, 1999 - Laura Folbigg dies, aged 18 months

* OCTOBER 24, 2003 - Folbigg sentenced to 40 years in prison for murder, non-parole period is 30 years, later reduced on appeal to 25 years

* JUNE 10, 2015 - NSW Governor David Hurley receives petition for review of convictions based on forensic pathology findings

* OCTOBER 28, 2018 - Inquiry into convictions opens

* MAY 2019 - An international medical registry reports that two US children have died of the mutation found in Sarah and Laura

* JULY 2019 - Inquiry finds no reasonable doubt to Folbigg's convictions. Validation of Folbigg mutation could not be completed before end of inquiry

* NOVEMBER 17, 2020 - Likely role of CALM2 mutation in Sarah and Laura's death confirmed in world leading study

* MARCH 3, 2021 - Petition for Folbigg pardon sent to NSW Governor Margaret Beazley