When Lars Peder Poulsen was born on 8 August 1849, in Rislev, Præstø, Denmark, his father, Poul Larsen, was 34 and his mother, Karen Marie Frederiksdatter, was 20. He married Ane Marie Falch in 1876. They were the parents of at least 3 sons. He lived in Rislev, Tybjerg, Præstø, Denmark in 1860 and Kongsted, Fakse, Præstø, Denmark for about 45 years. He died on 9 May 1937, in Kongsted, Præstø, Denmark, at the age of 87, and was buried in Kongsted, Præstø, Denmark.