When Wilber Homer Alleman was born on 15 June 1860, in New Oregon Township, Howard, Iowa, United States, his father, Herman Alleman, was 26 and his mother, Rachel Johnson, was 18. He married Martha Caroline Monger on 4 December 1881, in Albany, Gentry, Missouri, United States. They were the parents of at least 4 sons and 1 daughter. He lived in Salem, Marion, Oregon, United States in 1900 and McKee, Marion, Oregon, United States in 1930. He died on 6 March 1932, in Woodburn, Marion, Oregon, United States, at the age of 71, and was buried in Belle Passi Cemetery, Woodburn, Marion, Oregon, United States.