Mary Hannah (Rambow) Heiden was born on Monday, January 13, 1878 as the fourth child of Heinrich and Wilhelmina (Milhan) Rambow.

She married William Carl Heiden on Wednesday, February 17, 1897. Mary's younger sister, Fredareka, married William's brother Herman John Heiden.

Mary and William had 13 children who all lived to adulthood.