Adolphe Quetelet

https://en.wikipedia.org/wiki/Adolphe_Quetelet

Lambert Adolphe Jacques Quetelet (French: [k%C9%99tl%C9%9B]; 22 February 1796 – 17 February 1874) ForMemRS was a Belgian astronomer, mathematician, statistician and sociologist. He founded and directed the Brussels Observatory and was influential in introducing statistical methods to the social sciences. His name is sometimes spelled with an accent as Quételet. He developed the body mass index scale.