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Peter O. Larson

15th Wisconsin Volunteer Infantry
The Scandinavian Regiment

Database Record Change Request

Name at Enlist

Peter O. Larson

Birth Name

Peder Olsen Ofsdahl

Other Names

Peter Ofsdahl


27 Oct 1835 – 10 Oct 1905

Birth Place

Biri, Oppland

Birth Country


Resident of Muster-In

Coon Prairie, Bad Ax (Vernon) County, WI

Company at Enlistment


Rank at Enlistment


Muster Date

16 Nov 1861

Death Location

Trempealeau County, WI

Burial Location

French Creek Lutheran Cemetery, Ettrick, Trempealeau County, WI


Anna Pedersdatter


Ole Larsen Ofsdahl


ca. 1857


Martha Nelsestuen

Spouse Lived

-ca. 1871

Married On

before 1866

Marriage Location

Trempealeau County, Wisconsin

2nd Spouse

Ingeborg Holmen

2nd Spouse Lived


2nd Marriage Date

before 1875

2nd Marriage Location


Peter O. Larson, also known as Peter Ofsdahl, was born on October 27, 1835 in Biri, Norway. His parents were Ole Larson Ofsdahl and Anna Pedersdatter. He immigrated circa 1857 and settled in Coon Prairie, Vernon County, WI.

Larson joined the WI 15th Infantry, Company B. The men of the company called themselves the “Wergeland Guards” in honor of Henrik Wergeland, the famous Norwegian writer and poet.

The army listed Larson as living in Coon Prairie, Bad Ax (Vernon) County, WI, age 27, and unmarried. He enlisted for three years on September 23, 1861 at La Crosse, WI, and mustered on November 16, 1861 at Madison, WI as a Corporal (Korporal). He was then promoted to Sergeant (Sersjant). He was wounded and taken prisoner at Stones River, TN on December 31, 1862, and sent to hospital in Nashville, TN. He was discharged from the service at Louisville, KY on April 4, 1863 on account of his wounds.

After the war, he returned to WI and went by the name Ofsdahl. He married Martha Nelsestuen before 1866 in Trempealeau County, WI. Together, they had three children: Anna (1866), Olud (1869), and Andrew (1871). Martha died eight weeks after Andrew was born. Peter remarried to Ingeborg Holmen before 1875 in WI. They had at least four children: Michael (1875), Emma L. (1876), and twins Hans P. and Julia (1879). They remained in Ettrick, Trempealeau County, WI. Ofsdahl died on October 10, 1905 and is buried in French Creek Lutheran Cemetery, Ettrick, WI.


Sources: WHS Regimental muster and descriptive rolls, 1861-1865, Wisconsin Adjutant General’s Office, vol.20, p.32; Det Femtende Regiment, Wisconsin Frivillige [The Fifteenth Regiment, Wisconsin Volunteers], Ole A. Buslett (Decorah, Iowa, 1894), p.388; Nordmaendene i Amerika, Martin Ulvestad, 1907, History Book Co., Minneapolis, MN, p.264; Oberst Heg og hans gutter, Waldemar Ager, 1916, Fremad Pub. Co., Eau Claire, WI, p.296; Roster of Wisconsin Volunteers, War of the Rebellion, 1861-1865, Vol I & II, compiled under direction of the Adjutant General, Madison WI, 1886, p.809; Civil War Pension Index, Roll #T288_274; 1890 Veterans Schedules, Roll: 116, Page: 1, Enumeration District: 284; 1880 Census, Roll: 1448, Family History Film: 1255448, Page: 74D, Enumeration District: 063; 1900 Census, Roll: 1819, Page: 3A, Enumeration District: 0128, FHL microfilm: 1241819;; The Whitehall Times and Blair Banner, 10/19/1905; History of Trempealeau County, Wisconsin, ed. Eben Douglas Pierce (Chicago: 1917), p.509; Biri parish register #4, born and baptised, p. 44,