Isidore of Saint Joseph was a Belgian Passionist lay brother who lived from 1881 to 1916. Born Isidore De Loor in East Flanders, he joined the Passionist order in 1907 and made his solemn profession in 1908. Throughout his religious life, he served his community in various practical roles, including working as a cook, gardener, and porter. Despite facing severe health challenges caused by cancer, he remained dedicated to his duties and to assisting those in need during the First World War.