Konstantinos Palaiologos Laskaris inherited the village Mpresnitza near the town of Strumica from his mother. His father donated in 1364 the village Mpresnitza to the Saint Panteleimon Monastery on Mount Athos. The monks from the Hilandar Monastery accused his father of unlawful seizure of their land. Konstantinos Palaiologos Laskaris appealed the case to the patriarchal tribunal requesting to nullify the donation on account of the inalienability of the dowry. After he received a favourable decision from the patriarch, he confirmed in June 1374 the donation of the village Mpresnitza to the Saint Panteleimon Monastery on Mount Athos as legal (τὸ μητρόθεν μοι περιελθὸν εἰς κληρονομίαν χωρίον περὶ τὴν Στρούμπιτζαν μὲν εὐρισκόμενον, Μπρέσνιτζαν δὲ ἐπονομαζόμενον, μετὰ πάσης ἧς νῦν ἔχει νομῆς καὶ περιοχῆς).