Rothschild (German pronunciation: [ˈʁoːt.ʃɪlt]) The name is derived from the German zum rothen Schild (with the old spelling "th"), meaning "with the red sign", in reference to the houses where these family lived or had lived. At the time, houses were designated by signs with different symbols or colors, not numbers.
The German surname "Rothschild" is not related to the Scottish/Irish surname of "Rothchilds" from the United Kingdom.
Most notable people with this surname are descendants of Mayer Amschel Rothschild who formed a financial dynasty and, in modern history, perhaps the wealthiest family by the scale of their private fortune.
In Denmark, by royal decree of 29 March 1814 all Danish Jews were obliged to adopt a surname after their town of residence. In the records, one family with residence in Roskilde took the name Rothschild, presumably because of the German pronunciation of the town's name. The wife of writer Meïr Aron Goldschmidt , Lea Rothschild (born 1801) were of that family. There are no indications that the Rothschild of Roskilde has any relation with the other Rothschild families.
The name is also carried by others, mostly Ashkenazi Jews, who are not related to the famous family.