In the Late Medieval and Early Modern period, tile stoves not only heated premises, but also decorated the homes of those who could afford them. The scenes and figures depicted on the tiles changed according to the broader changes that took place in culture. Images relevant to the Protestants appeared on tiles in the course of the development of the Reformation in Europe, in addition to religious motifs representing Catholic values. But what can the information encoded in the decoration of private spaces tell us about the owners’ religious beliefs and moral values? The article explores the issue by examining the case of a stove made of tiles with ambiguous signs: some of them had a meaning in Catholic culture, others spread after the introduction of Lutheranism, and one tile portrayed an authority relevant to the Anabaptists. Archaeologists have found all these tiles in a closed site on a single plot, a house in a former suburb of Memel (Klaipėda), which itself (and hence the stove) dates back to the 17th century. Not only were contemporaneous tiles used to build the stove, but tiles with symbols from previous periods were also reused. The article provides an interpretation of the contradictory religious signs that appeared on a single stove built in a suburb of Memel.