Dynasty of German painters, members of which were active from the 17th to the 19th century, in Austria, Italy, and the Netherlands as well as Germany. The founder of the family tradition was Johann Heinrich Roos (b Reipoltskirchen, 29 Sept. 1631; d Frankfurt, 3 Oct. 1685). He trained in Amsterdam and specialized in idyllic pastoral scenes with herdsmen and livestock in the manner of such Italianate Dutch painters as Berchem and Dujardin. His works in this vein were copied and imitated into the 19th century. He had four painter sons, including Philipp Peter Roos (b St Goar, 30 Aug. 1657; d Rome, 17 Jan. 1706), who is the best-known member of the family. He settled in Italy in 1677 and in the late 1680s lived near Tivoli, from which he derives his nickname ‘Rosa da Tivoli’. Subsequently he lived mainly in Rome. Like his father he specialized in landscapes with animals. Examples of his large output are in many galleries.