Robert-Ferdinand Treytorrens de Loys
1857–1917 (age 60)
Biography
Robert-Ferdinand Treytorrens de Loys applied his engineering mind to the emerging demands of transport and sanitation, helping to supervise bridgeworks, canals, and municipal water systems that unified the villages around Écublens.
He prized careful planning and collegiality, mentoring younger engineers and insisting that every project be measured against the common good rather than shortcuts.