Where does “Romerriget” come from?

Romerriget (Danish) comes from Danish romer, from Danish Rom, from English Rom, from English Romford, from Old English ford, from Proto-West Germanic furdu, from Proto-Germanic furduz, from Proto-Indo-European pértus — passed , crossed.

Ancestry of “Romerriget”, step by step

Romerriget traces back through two separate lines of ancestry.

via Danish romer

StepLanguageWordMeaning
1Danishromera Roman
2DanishRomcity of Rome
3EnglishRomA member of the Romani people; A male member of...
4EnglishRomfordhistorically a market town in Essex OS grid ref TQ5188
5Old Englishfordford
6Proto-West Germanicfurduford
7Proto-Germanicfurduzford
8Proto-Indo-Europeanpértuscrossing
9Proto-Indo-Europeanper-before, in front; first; to go through
10Proto-Indo-Europeanpr̥tóspassed , crossed

via Danish rige

StepLanguageWordMeaning
1Danishrigekingdom; empire; realm
2Old Norseríkirealm
3Proto-Germanicrīkijąrulership, government, authority; realm, kingdom
4Proto-Germanicrīksking, ruler
5Proto-Celticrīxsking
6Proto-Indo-Europeanh₃rḗǵsking, ruler
7Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just
Every word from Proto-Indo-European pr̥tós