Rollmann was born on February 9, 1853, in Calvary, Wisconsin.

[1][2] He attended high school in Fond du Lac, Wisconsin.

He died at his home in Chilton on August 23, 1927.

[1] Rollmann was a member of the Senate representing the 15th district from 1915 to 1918.

Additionally, Rollmann was an alderman and Mayor of Chilton, Wisconsin.