Editing Firth of Forth (section)

==Name==
''Firth'' is a cognate of ''[[fjord]]'', a Norse word meaning a narrow inlet.
 
''Forth'' stems from the name of the river; this is {{lang|cel-x-proto|vo-rit-ia}} ('slow running') in [[Proto-Celtic]], yielding {{lang|gd|[[:gd:Linne Foirthe|Foirthe]]}} in [[Old Gaelic]] and {{lang|cy|[[:cy:Aber Gweryd|Gweryd]]}} in Welsh.<ref>{{cite book |last=Field |first=John |title=Place Names of Great Britain and Ireland |page=74 |location=London |publisher=David & Charles |date=1980 }}</ref>

It was known as ''{{lang|la|Bodotria}}'' in [[Roman Empire|Roman]] times and was referred to as ''{{lang|grc|Βοδερία}}'' in [[Ptolemy]]'s ''[[Geography_(Ptolemy)|Geography]]''. In the [[Norse mythology|Norse]] [[saga]]s it was known as the {{Lang|non|Myrkvifiörd}}.<ref>{{cite book |last1=Anderson |first1=Joseph |last2=Hjaltalín |first2=Jón A. |last3=Goudie |first3=Gilbert |date=3 January 1873 |title=The Orkneyinga saga |url=https://archive.org/details/orkneyingasaga00goudgoog |access-date=3 January 2018 |publisher=Edmonston and Douglas |publication-place=Edinburgh |via=[[Internet Archive]] }}</ref> An early [[Welsh language|Welsh]] name is {{lang|cy|Merin Iodeo}}, or the 'sea of {{lang|la|[[Urbs Iudeu|Iudeu]]}}'.<ref>{{Cite book |last=Fraser |first=James E. |title=From Caledonia to Pictland: Scotland to 795 |publisher=[[Edinburgh University Press]] |year=2009 |location=Edinburgh |pages=171}}</ref>