He married Anna Pehrsdotter in 1862. Anna was born on 3 June 1840 in Hassela parish in Helsingland, a short distance south of the parish of Attmar. Ingemar and Anna had two children in Sweden. They were Per Michael and Andretta Sigrid.
The family of four immigrated in 1867 to Iowa from Sweden coming to the port of New York on 29 Jun 1867. From there they came by rail to Chicago and on to Boone to join up with the Swedes at Swedebend. They came with the group in the third week of August to Denison to buy land. The land records in Crawford County show that Ingemar Michaelson contracted for purchase on 27 August 1867 from the Providence Western Land Company, the 40 acres in the south west part of the south west quarter of the section now known as Stockholm section 7. Ingemar made later purchases of the 40 acres adjoining to the north and Sven Johnson's 80 acres to the east when the latter family left.
On 16 August 1868, Ingemar Michaelson was one of the eighteen founders of the Swedish Baptist Church of Kiron, Iowa. In the beginning he assumed joint pastorial duties with Carl Frodig. He remained an active member of the church his entire life.
He appeared on the census on 30 June 1870 in Jackson Twp, Boyer River Post Office, Crawford Co, Iowa. Recorded on page 3 of the census schedule for dwelling 24 is the family of Ingamar Michaelson, age 33, male, white, a farmer, born in Sweden, and a real estate value of $1500 and personal estate of $580; his wife Anna, age 30, female, white, keeping house and born in Sweden; Peter, age 6, male, white, at school and born in Sweden; Annett, age 5, female, white at school, and born in Sweden; and Victor, age 7 months, male, white, at home and born in Iowa.
He appeared on the census in June 1880 in Stockholm Township, Crawford Co, Ia. The Michaelson family were residing in the south west quarter of Stockholm section 7 when their neighbor to the east, Charles J. Johnson, came to collect census data. This is the information he wrote down. Ingemar was 43 years old and doing the farming. His wife Anna was 39 and keeping house. They were both born in Sweden. Their children born in Iowa were listed as: Victor age 10 and at school, daughter Christina age 3 and at home, and daughter Amanda age 1 at home. (Son Peter had died in 1870 and three of the older Michaelson daughters had died during the diptheria epedemic in 1877.) On the Michaelson property was a second house on the east 80 acres of the SW quarter that had been owned by the Sven Johnsons from 1867 to 1874 when the Michaelsons added it to their original 40 acres. At the time of the census, this house was occupied by a Mrs. Sophia Christianson, a 47 year old widowed lady who performed yeoman service to the community in her mid-wife capacity. The Michaelsons deeded her the acre surrounding the house in 1880 which Sophia lived in until 1907 when she deeded it back. (Sophia died in 1914 at the age of 81.)
He appeared on the Iowa census in 1885 in Stockholm Twp, Crawford Co, Ia. The data for the family at the Ingemar Michaelson home in the SWSW of section 7 lists: Ingemar Michaelson, age 48, male, married, farmer, born in Sweden; his wife Anna, age 44, female, married, born in Sweden; his son Victor E., age 15, male, born in Iowa; his daughter Christin E., age 8, female, born in Iowa; daughter Nettie A. , age 6, female, born in Iowa; his daughter Anna A., age 4, female, and born in Iowa.
He appeared on the Iowa census in 1895 in Stockholm Twp, Crawford
Co, Ia. The record for included:
Family #7. Ingemar Michaelson, age 57, male, married, born in
Sweden, farmer, Sw. Baptist, entitled to vote; his wife Anna,
age 54, female, married, born in Sweden, keeping house, Sw. Baptist;
son Victor, age 25, male, single, born in Crawford County, farmer,
subject to military duty, entitled to vote; daughter Christine,
age 18, female, single, born in Crawford Co, Sw. Baptist; daughter
Manda, age 16, female, single, born in Crawford Co, Sw Baptist;
daughter Emelia, age 14, female, single, born in Crawford County,
Sw. Baptist.
The family also appeared on the census in June 1900 in Stockholm Twp, Crawford Co, Ia.
Ingemar was a farmer in Stockholm Township, Crawford Co, Iowa until he retired and moved to Kiron in 1908. Anna Amelia, their youngest daughter, moved with them and cared for them. Son Victor E. Michaelson bought the homestead when his parents retired and lived there until his death in 1943.
Ingemar died on 25 May 1927 in Kiron, Iowa. He was 90 years, 4 months, and 7 days old when he died. Dr. W. A. Garner reported he died from terminal septecemia following catarrh and bronchitis. He was buried about 28 May 1927 in Kiron Cemetery, Kiron, Iowa. He is the 451st decedent to be buried there and his grave is in lot 25 where several members of his family are buried.