This picture was taken in 1900. Rev. Rahn, born in 1863, is of the fifth generation of the Rahn family who have continuously carried on the vocation of the ministry for the last 233 years. Three of them served in Switzerland. He is one of five children born to Rev. Herman Ulrich Rahn Sr. and Marie (Boise) Rahn.
His mother died when he was only ten years old, and when he was fifteen his father died, making the children orphans. He received his preparation for the ministry at Elmhurst College, Elmhurst, IL, and the Eden Theological Seminary in Webster Groves.
The Rahns had six children, the youngest of whom, Edna, died in 1917 at the age of 12. All of the others survived and married.