When Lauri Juho Jarvenpaa was born in 1800, in Kauhava, Vaasa, Finland, his father, Eric Jarvenpaa, was 46 and his mother, Maria, was 45. He married Greta Andersson on 17 December 1822, in Vaasa, Finland. They were the parents of at least 4 sons and 3 daughters. He died on 15 March 1872, at the age of 72.