Serial family annihilators

I'm wondering if you know about any serial family annihilators, people who murdered their family, got a new family, and then killed that family as well. I know of four (which I've listed below) but there's ought to be more than that, especially in third-world countries.

George Hassell
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In 1917, Hassell murdered his common-law wife and their three stepchildren in Whittier, California, over an argument as to whether or not he should join the Army and fight in WW1. He got away with those murders and acquired a new family in Farwell, Texas. In 1926, he murdered his wife and eight children with a hammer, razor, stockings, axe, and shotgun. The murders occurred after he had an argument with his wife because he raped and impregnated his stepdaughter. He tried to get away with those murders by dumping the bodies in his cellar, but was caught and subsequently executed by electric chair.

Constance Fisher
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In 1954, Fisher drowned her three children in the bathtub of her house in Maine. After she was arrested, she was diagnosed with schizophrenia and deemed unable to stand trial, and was thus sent to a state hospital for treatment. She was released in 1959, and all was well until 1966, when Fisher drowned her three new children in the bathtub and then attempted suicide. She was once again sent to a state hospital, but she escaped in 1973 and "accidentally" drowned to death in a nearby river.

Paul Harrington
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In 1975, Harrington fatally shot his wife and two daughters with his revolver at their home in Detroit, Michigan, before turning himself in to the police. He committed the murders because his wife had recently separated from him. He was acquitted by reason of insanity and spent a number of years in a mental hospital until he was released. In 1996, he murdered his second wife and their three three-year-old son before turning himself in to the police. The murders were motivated by Harrington's stress caused by being laid off, broke, and out of depression medication. That time, he was found guilty and sentenced to life imprisonment.

Angeline Mabhiza
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In 2011, Mabhiza fatally poisoned two of her children in Zimbabwe. She killed another in 2013. For the first three murders, she only served community service because she was mentally ill. In 2014, she fatally poisoned her two children and their cousin with pesticide after an argument with her mother. Afterwards, she committed suicide to avoid punishment.