Fosi
Eth. Fosi a small German tribe, of which nothing is known beyond what Tacitus (Germ. 36) relates of them, viz., that they were subject to the Cherusci, and became involved with them in their ruin. The banks of the stream Ferse, in Brunswick, are generally looked upon as the country once inhabited by them, and the little town of Fosenbrock may have derived its name from them. In the time of Ptolemy their country was already occupied by the Langobardi.
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.