Erhard’s Grove, a township organized September 24, 1870, was named for Alexander E. Erhard, a signer of the petition for organization, at whose house the first election was held. Erhard village, on a branch of the Great northern railway, was platted in July, 1882.
Source: The Book “Minnesota Geographic Names: Their Origin and Historic Significance” Volume 17 – 1920 By Warren Upham”