https://en.wikipedia.org/wiki/River_Thames#Etymology
The Thames, from Middle English Temese, is derived from the Brittonic Celtic name for the river, Tamesas ..., recorded in Latin as Tamesis and yielding modern Welsh Tafwys "Thames". The name may have meant "dark" and can be compared to other cognates such as Russian темно ..., Lithuanian tamsi "dark", Sanskrit tamas, Irish teimheal and Welsh tywyll "darkness" ... and Middle Irish teimen "dark grey". The same origin is shared by countless other river names, spread across Britain, such as the River Tamar at the border of Devon and Cornwall, several rivers named Tame in the Midlands and North Yorkshire, the Tavy on Dartmoor, the Team of the North East, the Teifi and Teme of Wales, the Teviot in the Scottish Borders, as well as one of the Thames' tributaries called the Thame.
http://forum.index.hu/Article/viewArticle?a=56318912&t=9035002
"Az s végű Temes, Maros, Szamos, Körös csoportba remekül belefér, és ezen nevek a római birodalmat megelőző korra mennek vissza (a Temes például rokonítható a Temzével, bár erről hallgatnak a szótárak)" |
