The recently identified works by Xaver Ferenc Falkoner (Falconer, 1737–1792), a painter of Buda known so far mainly from verbal sources and works in Croatia, provide a more detailed and richer picture of his activity. After a review of the family workshop, the paper analyses his altarpieces in rural churches of historical Hungary. He delivered his altar pictures of Saint Catherine of Alexandria, Saint Elizabeth of Hungary, the Prayer of Saint Anthony of Padua and Saint Helen to the friars minor in the upper town of Szeged around 1770. The Franciscans ordered a painting (Stigmatization of Saint Francis of Assisi) for Bács (Bač, RS) in 1774; in Futak (Futog, RS) he was commissioned by András Hadik (side altar pictures of Saint Andrew, Saint Frances de Chantal, Saint Anne teaching Mary, and Crucifixion) in 1776; he probably painted the Prayer of St Francis of Assisi, St Francis Seraph, the Apotheosis of St Didacus, the Apotheosis of St Anthony the Hermit, the death of St Joseph and the picture of the votive Pieta statue at Sasvár around 1780 for Baja. His half-length pictures of saints (Ss Francis, Bonaventura, Francis Solano, James of the March, Bernardine of Siena, Anthony of Padua, John of Capestrano, and of the Mother of Good Advice, 1774–76) for praedellas and superstructures of altars in churches of the listed saints in the Franciscan province named after Saint John of Capestrano. Though repainted, his frescoes only survive in the Budakeszi parish church: Wisdom with Faith, Hope and Love, and painted altar architecture, dated 1784. The painting technique and easily recognizable language of forms and colouring typical of Ferenc Falkoner, who was trained in the academy in Vienna, are presented on the basis of restorers' researches.