Röhss was a family of merchants in the city of Gothenburg, Sweden, noteworthy through their significant donations to several local and national institutions.
He had three sons who settled in Gothenburg; the most important of these was Wilhelm August Fredrik Röhss (1796-1858), who started his career as a pharmacist but changed his occupation to trade with Scandinavia.
He settled in Gothenburg in 1827, where he helped the merchant Johan Gabriel Grönwall in establishing a dyeing plant at the river Mölndalsån.
[1] Wilhelm Röhss the elder conducted trade and shipping on a large scale and owned a brewery and factories for cotton, sugar, paper, among other things.
He donated considerable sums to the Royal Swedish Academy of Arts, and a large book collection to the Gothenburg Public Library.