English summary: As a result of the First Crusade, four so-called crusader states were established in the Levant, chief among them the Kingdom of Jerusalem and the Principality of Antioch. Participants of the First Crusade and later arrivals from the West settled in these territories and developed into new groups with distinct identities based on the shared experience of the crusade and the foundation period, on their confrontation with Muslims, Jews and Oriental Christians and on a growing attachment to their new homes in the East. This book is dedicated to analysing this process of the...