Where does “𐍂𐌿𐌼𐌰” come from?

𐍂𐌿𐌼𐌰 (Gothic) comes from Proto-Germanic Rūmō, from Latin Rōma — Rome and/or Constantinople (the latter as "Nova Roma").

Ancestry of “𐍂𐌿𐌼𐌰”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	Rūmō	Rome
2	Latin	Rōma	Rome and/or Constantinople (the latter as "Nova Roma")