Karl Pearson - Family

Family

Carl Pearson, later known as Karl Pearson (1857–1936), was born to William Pearson and Fanny Smith, who had three children, Aurthur, Carl (Karl) and Amy. William Pearson also sired an illegitimate son, Frederick Mockett.

Pearson's mother, Fanny Pearson née Smith, came from a family of master mariners who sailed their own ships from Hull; his father read law at Edinburgh and was a successful barrister and Queen's Counsel (QC). William Pearson's father's family came from the North Riding of Yorkshire.

"Carl Pearson" inadvertently became "Karl Pearson" when he enrolled at the University of Heidelberg in 1879, which changed the spelling. He used both variants of his name until 1884 when he finally adopted Karl. Eventually he became universally known as "KP".

He was also an accomplished historian and Germanist. He spent much of the 1880s in Berlin, Heidelberg, Vienna, Saig bei Lenzkirch, and Brixlegg. He wrote on Passion plays, religion, Goethe, Werther, as well as sex-related themes, and was a founder of the Men and Women's Club.

In 1890 he married Maria Sharpe, who was related to the Kenrick, Reid, Rogers and Sharpe families, late 18th century and 19th century non-conformists largely associated with north London; they included:

  • Samuel Rogers, poet (1763–1855)
  • Sutton Sharpe (1797–1843), barrister
  • Samuel Sharpe, Egyptologist and philanthropist (1799–1881)
  • John Kenrick, a non-Conformist minister (1788–1877)

Karl and Maria Pearson had two daughters, Sigrid Loetitia Pearson and Helga Sharpe Pearson, and one son, Egon Sharpe Pearson. Egon Pearson became an eminent statistician himself, establishing the Neyman-Pearson lemma. He succeeded his father as head of the Applied Statistics Department at University College.

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