He was a teacher at the theological seminary in Christiania starting in 1851, and was appointed vicar in Gerpen in 1856.

He was appointed Bishop of the Diocese of Throndhjem (Nidaros) in 1860, and assumed that office on 19 July 1861.

[1][2] He also served as praeses of the Royal Norwegian Society of Sciences and Letters from 1865 to 1870 and 1872 to 1874.

[3] The road Biskop Grimelunds vei in Vinderen has been named for him.

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