Ancestry Com: An existing family tree is available under Zachariah Leatherwood family
w/o parent information

Iowa State Census Collection 1836-1925
Nina Hoster
Birth 1876
Birthplace: NY
Census Date 1885
Resident County: Bremer
Locality: Jackson
Roll: IA1885_152
Line: 10
Family Number: 41
Household Members:
Georg Hoster 32
Christina Hoster 35
Nina Hoster 9
Walter Hoster 7
William Stahl 56

Barnes County Census June 1, 1900:
85B 92 6 13B Irgens Nina E. 24 New York ed06-pg085a.txt
Source: http://us-census.org/pub/usgenweb/census/nd/barnes/1900/ed06-pg085a.txt

Nina E Irgnus in household of Louis D Irgnus, "United States Census, 1900" (note incorrect spelling of family name)
Event place: Valley City Township Valley City Ward 1-3, Barnes, North Dakota, United States
Birth: Dec. 1875
Father & Mother's birthplace; NY
Household - Gender - Age - Birthplace
Head: Louis D Irgnus M 32 Minnesota
Wife: Nina E Irgnus F 25 New York
Daughter: Charlotte S Irgnus F 1 North Dakota
Servant: Tillie Carlson F 24 Sweden

Note in father George W. hoster: Buried at Oakland, CA (near) home of daughter Nina (Mrs. Lewis Irgens)

4-years-old in 1880 Census making her estimated birth year 1876

Nina married dentist Dr. Lewis Irgens (brother of county judge O. H. des Irgens) whose office was in old Dakota drugstore building.

They moved to Oakland, CA, in 1908, and had one daughter, Charlotte, who was killed in an auto accident on a mountain road near Oakland, CA, 1931. Nina died in childbirth in 1910.