Other Events and Attributes:

• Immigration: 1895
• Census: 28 Apr 1910, Darling Township, Morrison, MN
• Census: 9 Jan 1920, Darling Township, Morrison, MN
• Census: 12 Apr 1930, Darling Township, Morrison, MN
• Census: 4 Apr 1940, Darling Township, Morrison, MN

Notes:

Immigration:
John probably immigrated in 1895 as this is the answer he gives most often. I have been unable to find his record of entry to the US.

Census:
1910 census shows John T. Mattson, 33, married 9 years, b. Fin-Swedish, parents b. Fin-Swedish, immigrated 1893, naturalization papers submitted, farmer; Olga A., 32, 6 children born/5 living, b. Fin-Swedish, parents b. Fin-Swedish, immigrated 1894; children b. MA: John A., 9; Hollis, 7; children b. MN: Edith E., 3; Leonard T., 2 1/12.

Right next door is a Frank Skoberg, I suspect he is a brother to Olga. He is first found in Norwood, MA as was his sister.

Census:
1920 census shows John T. Mattson, 44, married 9 years, b. Finland, parents b. Finland, immigrated 1895, naturalization 1916, farmer; Olga A., 42, immigrated 1896, naturalized 1916, b. Finland, parents b. Finland; children b. MN: Hollis, 17; Edith, 12; Hilmar, 11; Olga, 10; Astrid, 8 6/12; Einar, 4 4/12.

Census:
1930 census shows John T. Mattson, 54, married at age 23, b. Finland, parents b. Finland, immigrated 1895, farmer; Olga E., 52, married at age 21, immigrated 1896, naturalized 1916, b. Finland, parents b. Finland; children b. MN: Einar L., 14. Also enumerated is Norris Stanley, aged 2 1/2 and listed as a grandson. I can't tell who he "belongs" to as no daughter married a Stanley.

Census:
1940 census shows John T. Mattson, 64, b. Finland, farmer; Olga, 61, b. Finland, Norris Mattson, grandson, 12, b. MN.

The grandson Norris Stanley has now become Norris Stanley Mattson. Further research shows he was born June 14, 1927 in St. Paul, the son of Edith. He died 22 May 2012. His obituary names Edith as his mother and her husband Walter Olson his step-father. Edith lived to be 109 years old, she died in 2016, her obituary does not mention him.
In 1930 Edith is living in Minneapolis and working as a maid for a private family. She does not marry until 1933.

Buried:
Find A Grave e-Memorial

John married Olga Alina SKOGBERG on 29 Jul 1899 in Boston, Suffolk, MA. Olga (daughter of Johan Gustaf SKOGBERG and Katharina Wilhelmina DANIELSDR) was born on 10 Apr 1878 in Jomala, Åland, FINLAND; died on 21 Jun 1965 in Minneapolis, Hennepin, MN; was buried in Minneapolis, Hennepin, MN. [Group Sheet] [Family Chart]

Notes:

Married:
John and Olga were born and raised with 6 or 7 miles apart. According to the family story they did not know each otherin Finland. They met and married in Massachusetts.

1. Allen John MATTSON was born on 5 Feb 1901 in Norwood, Norfolk, MA; died on 4 Apr 1970 in Rockford, Winnebago, IL; was buried in Hillside Cemetery, Rockford, Winnebago, IL.
2. Hollis Sigurd MATTSON was born on 17 Jul 1902 in Norwood, Norfolk, MA; died on 6 Jun 1993 in Kalispell, Flathead, MT; was buried in Conrad Memorial Cemetery, Kalispell, Flathead, mt.
3. Karl Lennart MATTSON was born on 7 May 1904 in Norwood, Norfolk, MA; died on 21 Feb 1905 in Norwood, Norfolk, MA.
4. Edith E MATTSON was born on 13 Mar 1907 in Darling Township, Morrison, MN; died on 18 Dec 2016 in Brainard, Crow Wing, MN; was buried in Little Falls, Morrison County, MN.
5. Leonard Theodore MATTSON was born on 28 Feb 1908 in Little Falls, Morrison County, MN; died on 25 Jul 1946 in Minneapolis, Hennepin, MN; was buried on 29 Jul 1946 in Fort Snelling National Cemetery, Minneapolis, Hennepin, MN.
6. Olga Lennea MATTSON was born on 9 Apr 1909 in Darling Township, Morrison, MN; died on 28 Sep 2008 in Moose Lake, Carlton, MN; was buried in Hillside Cemetery, Minneapolis, Hennepin, MN.
7. Austrid Mildred MATTSON was born on 24 Aug 1911 in Darling Township, Morrison, MN; died on 1 Dec 2001 in Hennepin Co., MN; was buried in Our Saviours Lutheran Cemetery, Ham Lake, Anoka, MN.
8. Einar Leroy MATTSON was born on 29 Sep 1915 in Darling Township, Morrison, MN; died on 5 Nov 2000 in Grand Rapids, Itasca, MN; was buried in Fort Snelling National Cemetery, Minneapolis, Hennepin, MN.

Mathias married Ida Kristina SAMUELDRFINLAND. Ida was born in 1844 in Åland, FINLAND. [Group Sheet] [Family Chart]