Elsie Mary Koski

1909 - 1994  (85 years)    Has 4 ancestors and one descendant in this family tree.

 Set As Default Person    

• Name	Elsie Mary Koski  [1, 2, 3]
  Gender	Female
  Birth	19 Feb 1909	Sandstone, Minnesota, USA   [1, 2, 3]
  Death	29 Mar 1994	Mesa, Maricopa, Arizona, USA   [2]
  Siblings	2 brothers and 1 sister
  1. John Jacob Koski           b. 30 Apr 1904, Pennsylvania           d. 27 Sep 1990, Finlayson, Pine, Minnesota, United States  (Age 86 years)   2. Arthur G Koski           b. 30 Jul 1907, Sandstone, Pine County, Minnesota, USA           d. 3 Jul 1978, Moose Lake, Carlton County, Minnesota, USA  (Age 70 years)   3. Elsie Mary Koski           b. 19 Feb 1909, Sandstone, Minnesota, USA           d. 29 Mar 1994, Mesa, Maricopa, Arizona, USA  (Age 85 years)   4. Esther Agnes Koski           b. 9 Dec 1918, Finlayson, Pine, Minnesota, United States           d. 4 Nov 2010, Sandstone, Pine, Minnesota, USA  (Age 91 years)
  Half-siblings	2 half sisters (family of "Unknown" and Sanna Maria Kankaanpaa)
  1. June Matilda Koski           b. 3 Mar 1911, Pine, Minnesota, USA           d. 20 Dec 2007  (Age 96 years)   2. Sylvia I Koski           b. 6 Jan 1913, Minnesota           d. 18 Oct 1997, Finlayson, Pine, Minnesota, United States  (Age 84 years)
  Person ID	I4350	Coon White Family Tree

  
  

  Father	Jacob Koski           b. 25 Jun 1879, Kauhava, Lansi-Suomen Laani, Finland           d. 20 Nov 1941, Finlayson, Pine, Minnesota, United States (Age 62 years)
  Relationship	natural
  Mother	Sanna Maria Kankaanpaa           b. 17 Jun 1881, Kauhava, Lansi-Suomen Laani, Finland           d. 19 Feb 1951, Finlayson, Pine, Minnesota, United States (Age 69 years)
  Relationship	natural
  Family ID	F1057	Group Sheet  |  Family Chart

  
  

  Family	William John Wallentiny           b. 7 Jun 1904, Melrose, Stearns, Minnesota, USA           d. 29 Dec 1999, Mesa, Maricopa, Arizona, USA (Age 95 years)
  Children	1. Living
  Family ID	F1072	Group Sheet  |  Family Chart

  
  

• Event Map		Birth - 19 Feb 1909 - Sandstone, Minnesota, USA Death - 29 Mar 1994 - Mesa, Maricopa, Arizona, USA
  Pin Legend	: Address       : Location       : City/Town       : County/Shire       : State/Province       : Country       : Not Set

  
  

• Reference

  "Elsie Mary Koski". Coon White Family History. https://www.cw.ourfamilyroots.org/getperson.php?personID=I4350&tree=cw (accessed August 20, 2026).

  
  

Sources

[S2031] Ancestry.com, 1910 United States Federal Census, Year: 1910; Census Place: Sandstone, Pine, Minnesota; Roll: T624_711; Page: 7A; Enumeration District: 0128; FHL microfilm: 1374724. [S435] Ancestry.com, U.S., Social Security Death Index, 1935-2014, Number: 527-13-4699; Issue State: Arizona; Issue Date: 1970. [S856] Ancestry.com, 1940 United States Federal Census, Year: 1940; Census Place: Minneapolis, Hennepin, Minnesota; Roll: m-t0627-01984; Page: 12B; Enumeration District: 89-219.