an Entity references as follows:
John Aaron Christianson (November 23, 1923 – December 15, 2010) was a politician and educator in Manitoba. He served in the Legislative Assembly of Manitoba as a Progressive Conservative from 1959 to 1962 and was a cabinet minister in the government of Dufferin Roblin. He was elected to the Manitoba legislature in the 1959 provincial election, defeating incumbent Liberal-Progressive Charles Greenlay by 473 votes in the Portage la Prairie constituency. He was appointed to Roblin's cabinet on October 25, 1961 as . He died in Winnipeg, Manitoba, Canada due to complications from bone cancer.