Ole Kirk Christiansen (7 April 1891 – 11 March 1958) was the founder of Lego in 1949.
Christiansen was born on 7 April 1891 in Filskov, Denmark. He first worked as a carpenter and later started creating unsuccessful toys for kids in Denmark after his wife's death and had to raise four of his children on his own. He was working as a carpenter until creating Lego in 1949. Christiansen died on 11 March 1958 from a heart attack, aged 66.