Seeking information on Donald Lien listed in the 1940 census (Barnes Township, Cass, North Dakota) whose parents are shown as Martin Lien & Mina Lien. Donald Lien was born in 1928 in North Dakota. Alternate spellings may be Lean or Liam in other records. Desire to connect to his or Martin & Mina Lien family descendants. Have historical documents that will be of interest to the family. Thank you in advance for any assistance.