► 1834 – Honorine Pellois – Bas-Val, Orne, France – age 10 (2 murders; & 1 attempt)
Honorine, aged ten, threw two young girls – each not much more than two years old – in a well on June 16 and 18, 1834. On the 20th she attempted to drown an eleven year old boy but was unsuccessful in her ploy. The justice of the peace first thought that they were accidents, but the community of Bas-Val suspected the girl, known for her cruelty to other children, whom she would torture by throwing dust in their eyes and then rubbing nettles into them. She also liked to strangle animals. Honorine eventually admitted she killed the two girls because they were said to be prettier than she. She delighted in seeing the suffering of family members of her victims.
Anne-Marie Boeglin, 17, murdered her father and two adult brothers in succession.
► 1871 – Mary Brister – Pennington, New Jersey, USA – age 11 at time of first suspected murder. (three or four deaths)
13-year-old Mary Brister was suspected of murdering three (or four) infant step-siblings she was charged with looking after, killing them over a period of more than two years.
Method: battery?, (& unknown).
► 1875 – Augustine-Marie Ouvrard – Pourcellerie, Luché-Pringé, Sarthe, France – age 12 at time of apprehension. (2 deaths of babies; plus wanted to kill others when opportunity might arise)
Method: smother with handkerchief.
After having smothered the two children of her mistress (aged 3 years & 18 months) she was removed to the hospital of La Flèche, and there felt impelled by some unnatural force to assassinate the juvenile patients.
► 1878 – Jennie Post – Spring Valley, New Jersey, USA – age 16 at time of apprehension (2 deaths; 1 rescued from attempt)
► 1885 – Rebecca Samuels – Barnesville, South Carolina, USA – age 12 at time of apprehension; age 10 (or perhaps 11) at time of first murder. (2 deaths)
Method: immerse in lye.
A girl, 12 years old, has been convicted of the a six weeks’ old infant that she was nursing. She soaked the child in a pot of concentrated lye. This is the second crime of the same kind she has committed within the past two years.
► 1892 – Bottoms Girl – Atoka, Kentucky, USA – age 6 at time of apprehension. (1 death; stated desire to kill more babies in the future)
Method: dismember, batter with stick.
This astonishing case involves a 6-year-old obsessed with a desire to murder babies. She was successful, after planning the deed long in advance, in murdering her 18-month-old sister and expressed the desire to kill more babies in the future.
► 1894 – “Novgorod Teenage Serial Killer Nurse” – Novgorod, Russia – age 14 when apprehended. (17 deaths)
► 1899 – Ivy Crabtree – Carmi, Illinois, USA – age 16 at time of apprehension (1 death; 3 separate attempts on total of 6 persons)
Method: arsenic, strangling.
Method: drown in well, suffocate with inserted objects, poison with paraffin oil.
► 1904 – Okato Take – Sasebo, Japan – age 15 (1 death, 2 attempts, 1 other intended)
Okato Take planned to murder 4 children as human sacrifices to fulfill a superstitious belief; murdered a boy (4), and attempted to murder two 7-year old girls, all by drowning.
► 1906 – Mary Maher – Dunkitt, County Kilkenny, Ireland – age 11 when discovered (3 deaths, 1 attempted murder; suicide)
Method: burn on stove.
Further investigation showed that there were probably 8 murders.
► 1909 – Ivanova Tamarin – Kurdino, Novaya Lagoda, Russia – age 17 at time of apprehension. (27 deaths)
Method: chop with ax.
Method: poison, ground glass.
Method: axe, (& unknown).
► 1961 – Donna Marie Stone – Belleville, Illinois – age 13 at time of capture – 4 murders
► 1966 – Piedad Martínez del Águila – Murcia, Spain – age 12 at time of apprehension – 4 murders
Method: potassium cyanide & chlorine
In the household of a Spanish working-class family with ten children, the daytime head of household was 12-year-old Piedad Martínez del Águila. In July 1965, her mother became pregnant with an eleventh child. By December young Piedad had become frustrated at having to run the household and work on the family’s cottage industry: polishing chrome metal parts, while her mother attended to tasks of cooking for twelve. The girl missed being able to play and see her friends. She decided to kill the youngest children, the ones who required the most attention from her. So, she poisoned them, starting with the youngest in series by increasing age. Little Piedad used chlorine tablets used for cleaning chrome combined with potassium cyanide rat poison, which she dissolved in milk.
Method: poison ("powder").
Method: stab with knife.
"La Perris," 17, who was in charge of a group of hitmen, has worked for Vargas Cardenas, one of the most-wanted men in Medellin and one of the top leaders of the Oficina de Envigado gang, for about three years. In 2011, she was arrested in Medellin, Colombia, for possession of a firearm. Police also expect that La Perris was involved with training or assisting young assassins in the Antioquia department's capital city of Medellin. La Perris was allegedly involved with an attack on a 16-year-old girl, which killed one girl and injured a 13-year-old and 6-year-old in the process. According to General Yesid Vasquez, the attack occurred because the two girls refused to be part of her gang. The 6-year-old is in critical condition at San Vincent de Paul hospital, after suffering a shot to the neck and cardiac arrest. [edited from linked source]
Gakirah Barnes committed her first murder, it is thought, at the age of 14, in 2011. She then joined a Southside Chicago gang, St. Lawrence Boys (AKA Fly Boy Gang). By the time she was killed in 2014 in a drive-by shooting by a rival gang, she is reputed to have committed 20 murders.
6/13 – 2001 – Jummai Hassan – Maiduguri, Nigeria – 51 (accomplice in cult sacrifices).
10 – 1834 – Honorine Pellois – Bas-Val, Orne, France – 2 & attempt.
11/13 – 1871 – Mary Brister – Pennington, New Jersey, USA – 4
13 – 1896 – Fanny Scovell – Oswego, New York, USA – 2.
13 – 1923 – Elizabeth McDonald – Boston, Massachusetts –1, & 3 attempts.
13 – 1961 – Donna Marie Stone – Belleville, Illinois – 4.
13/15 – 1871 – Agnes Norman – London, England – 4, & 1 attempt.
14?/17 – 2011 – “La Perris” (alias) – Medellin, Colombia – multiple.
16 – 1878 – Jenny Post – Spring Valley, New Jersey, USA – 3 (1 survived).
16 - 1899 – Ivy Crabtree - Carmi, Illinois, USA – 6 (1 died).
17 – 1838 – Anne-Marie Boeglin – Stetten, Haut Rhin, (Alsace), France – 3.
17 – 1867 – Elizabeth Wheeldon – Shirland Delves, near Alfreton, Derby, England – 2.
16?/17 – 1912 – Ivanova Tamarin – “Kurdio,” or “Kulda,” Estonia (?); or, Caucasus region (?) – 27 (accomplice).
18 – 1938 – Anna Vucored – Konjice, Yugoslavia (Slovenia) – 6.