St. Stephan and St. Sebastian is a Roman Catholic branch church in the Rhineland-Palatinate municipality of Kerpen (Eifel). It belongs to the parish community of Üxheim, Nohn, Oberehe, Walsdorf and Niederehe of the Vulkaneifel deanery. The church from the 16th century is listed as an individual monument.
After his marriage to Margaretha von Sombreff in 1506, Count Dietrich IV of Manderscheid-Schleiden had a chapel built on the slope southeast of his Kerpen Castle, which was also intended to serve as a village church. The church was the successor to another castle chapel, as there were castle chaplains in Kerpen as early as the 13th century. It was dedicated to Saints Stephen and Sebastian.
Although it was probably renovated in 1645, the small sacred building was spared destruction by the troops of Louis XIV during the War of the Palatinate Succession - in contrast to the Kerpen castle complex. Renovated and partially redesigned again in 1903 and most recently in 1975/76, three masses are celebrated there every week. The church has had the right to a weekly Sunday mass since 1703.
The former castle chapel is a Gothic building from the early 16th century. There is a war memorial on the church forecourt that commemorates those who fell in Kerpen in the two world wars. The sacred building is a single-column church, which means that the vault of its 10.12 m long and 7.58 m wide nave is supported by just a single central central column. The Kerpen Column stands on an octagonal base decorated with a holy water font and a relief figure carrying a shield. The closed choir has a clear width of 7.08 m and is 4.30 m deep. It is spanned by a star vault with colorfully painted keystones. The middle one shows a Madonna with baby Jesus as the Queen of Heaven sitting on a crescent moon. Other keystones show the coats of arms of the Manderscheid counts.