The Order of the Knights Hospitaller was one of the richest monastic orders in medieval Scandinavia. Despite this, scholarly interest in the Swedish branch has been comparatively small, and the study of the commanderies in Eskilstuna and Kronobäck have largely been limited to political and economic aspects. This paper attempts to remedy this by exploring the self-image of the Swedish Hospitallers through cataloguing and analysing the use of imagery on the preserved seals foundon charters signed by members of the order. This is done by approaching the material in the context of the divine connection between identity and iconographyon personal seals during the Middle Ages. Consequently, by studying changes and continuities in the use of symbolism on monastic seals, trends in the cultural andpolitical self-image of the commanderies can be understood and analysed. The study shows that there were major shifts in the Swedish Hospitallers’ self-image from the 13th and 14th to the 15th centuries. During the latter period, the theological seals came to depict a broader range of hagiographical rather than biblical scenes, in addition to becoming more individualised through the use of personal saints. This coincided with the order becoming embroiled in local conflicts in the Kalmar Union and indicates a process whereby the identity of the Swedish commanderies became aligned with the developing local identities present in the kingdom of Sweden rather than the universalist ideals of the military order.