Hugo was born in Mümliswil (Canton of Solothurn) on May 2, 1948. He had a sister, Margrit, and two brothers: Antony and Peter. Antony is now the only survivor. Hugo attended high school and apprenticed as a mechanic at Von Roll Klus AG. He entered the SMB seminary in 1969 and began the novitiate at Schöneck the following year.