[3] Eusidinus possessed lands in Bars County, for instance Barátka and Szántó (both laid in the territory of present-day Levice, Slovakia).
Eusidinus built a Romanesque church in Barátka (Baratka or Bratka), dedicated to St. Martin of Tours, with three altars.
Upon his request, the archbishop donated the villages of Barátka, Léva and Visk (today Levice and Vyškovce nad Ipľom in Slovakia) to the newly erected church, establishing its parochial area.
Some historians, for instance, László Erdélyi and Richard Marsina considered Martyrius' charter (called as "Diploma of Eusidinus" in Hungarian historiography) as a 14th-century forgery, citing anachronistic elements in the text (e.g. the words parochia or missale).
Géza II of Hungary, through ispán Gabriel, permitted his brother Stephen to donate the estates Barátka and Szántó with the above-mentioned church to the Garamszentbenedek Abbey (present-day Hronský Beňadik, Slovakia).