Articles lacking in-text citations from May 2022

Pietronella Peters (1848-1924) was a German painter who specialized in portraits and genre scenes of children.

Konrad Hermann Theodor Knopp (22 July 1882 – 20 April 1957) was a German mathematician who worked on generalized limits and complex functions.

Bernhard Sekles (20 June 1872 – 8 December 1934) was a German composer, conductor, pianist and pedagogue.

Hélène Jégado (1803 – 26 February 1852) was a French domestic servant and serial killer. She is believed to have murdered as many as 36 people with arsenic over a period of 18 years. After an initial period of activity, between 1833 and 1841, she seems to have stopped for nearly ten years before a final spree in 1851.

Lex McLean (born Alexander McLean Cameron, 30 April 1907 — 23 March 1975) was a Scottish comedian.
Described as "almost certainly the last of Scotland's great music hall comedians", he played to capacity houses all over Scotland from the late 1950s to the early 1970s, when he had to semi-retire on the grounds of ill health.
Known as "Sexy Lex" for his risque but never obscene humour, McLean's act was even passed by the Lord Chamberlain.At the peak of his popularity in the 1960s, he appeared in the BBC Scotland comedy series Lex and Lex Again. A fan of Rangers, he had Ibrox legend George Young appear as a guest on his television show.
McLean was a Freemason, and member of Lodge Dramatic No 571 in Glasgow, where he was a participant in the Lodge's festivities.

Adolphe Joseph Thomas Monticelli (October 14, 1824 – June 29, 1886) was a French painter of the generation preceding the Impressionists.

Victor Prosper Considerant (12 October 1808 – 27 December 1893) was a French utopian socialist philosopher and economist who was a disciple of Charles Fourier.