Seweryn Antonowicz Kłosowski (14 December 1865 - 7 April 1903), better known as George Chapman, was a Polish serial killer who murdered three of his four wives via tartar-emetic poisoning in the Hastings region of Sussex, England from 1897 to 1902. However, he was best known for being a prime suspect in the Jack the Ripper murders of 1888. For the murders he was convicted of, he earned the nickname 'the Borough Poisoner.' He was hanged in Wandsworth Prison on 7 April 1903.
For the murders he was convicted of, he earned the nickname 'the Borough Poisoner.'
He was hanged in Wandsworth Prison on 7 April 1903.