Saints who lived in solitary retreat – do they share something in common?

A saint from Switzerland who lived for many years in solitary retreat was Meinrad von Einsiedeln: https://de.wikipedia.org/wiki/Meinrad_von_Einsiedeln According to a historically untenable legend, Meinrad came from the family of the Counts of Hohenzollern. He was taught at the monastery school of the Benedictine Abbey of Reichenau in Lake Constance by the abbots Haito and Erlebald. …