The main problem with answer to this question is the establishment of the identity of person mentioned. Livonia was generally colonised by Germans, so vast majority of nobles living in the area were of German origin. On the other hand, as were speaking of late 14th century, we can assume that in the territories ceded to Teutonic Order by Denmark there were at least some Danish nobles and local Prussian nobility that in the late 14th century became largely germanised. Could they join the ranks of Teutonic Order? In theory, there were no obstacles for this to happen, yet the common rules existing in the Teutonic Order, albeit not formulated in any way allowed only Germans to join the ranks of the Order, while 'Germans' were understood as German-speaking inhabitants of regions considered 'Germanic', i.e. Germany, Switzerland, Austria, Netherlands and Lorraine. As Jean le Long d'Ypres. Benedictine monk and later the abbot of Saint-Bertin noted: 'Teutonic Order is a German knightly order and the order of the German Holy Mary, as it does not accept into their ranks anyone who does not come from the countries where German is spoken'. Of course, there were some leeways here and there, as Teutonic brothers were not above accepting members of non-German influential families from the region for political reasons; for example, they accepted Pomeranian prince Racibor in 1276 or duke Henry I of Ziebice (Lower Silesia) who joined the order around 1360 (although the latter was an ordained priest, so it is likely that he was accepted in the capacity of a chaplain, not brother-knight).

Such instances were, nevertheless, very rare and far between. Vast prevalence of even exclusive presence of Germans in the Teutonic Order was also noted in southern (Mediterranean) bailiwicks. In the late 14th century, after 150 years of presence in the region, absorbing the Livonian Order (Brothers of Christ) after 1237, receiving control of Eastern Pomerania (Pomerelia) in 1310 and Danish Estonia in late 1340s, Tetuonic Order established its identity as the staunch supporter of the German interests in the Baltic region, unlike Templars or Joannites who made their own, largely independent politics. This further made the practice of accepting non-Germans into their ranks unpopular. On the other hand, knight-brothers formed only a small part of the Order's strength and the bulk of their forces was composed of sergeants or professional soldiers in the employ of the order, who were bound by oath of loyalty to the order, but were not following the rules of the religious charter. A German speaking lesser Livonian nobles, such as descendants of Prussian or Danish nobility could have been accepted into their ranks, though these cases, albeit not as scarce as when it came to brother-knight, were also uncommon.