Erhart received Confirmation during the centennial Celebration of St. Michael Church, Loretto, Pa., on October 10, 1899. He worked on the family farm until 1904, when he went to work for the Pennsylvania Railroad in Cresson, Pa. In the 1910 Census, he is listed as a railboard laborer boarding at the Valentine Bishop parcel in Allegheny Township. Later that year, he left the area and became a farm worker in West Hinsdale, Ill. He worked several jobs in the Midwest, including a position with Bell Telephone in Kansas City and with the Santa Fe Railroad in Colorado.

In 1912, Erhart returned and purchased farmland at R.D., Loretto, Pa., near the Dutch Road junction between Loretto, Chest Springs and Carrolltown, which was later occupied by his grandson Augustine. During WW II, he did defense work in Cleveland, Ohio, but otherwise remained a farmer until his retirement in 1958.

Erhart also served two terms as an auditor for Allegheny Township, and four terms as Secretary-Treasurer for the Allegheny Township Board of Supervisors. He was also was an accomplished hunter, having killed about 25 white-tailed deer, and bagging a 150 pound bear on the first day of the 1948 bear season.

Marie’s early death was due to hepatitis secondary to gall bladder disease.