Why is rubella called "german measles"?

First description: Rubella is a viral illness that was first described by german physicians in the middle of the 18th century. It became known as german measles because of where it was first described, and because the rash it produces is similar in appearance to the rash of measles or rubeola.

Discovered in German: Rubella is often called “german measles, ” but it is not related to measles at all. It got this name because the rash caused by rubella looks like measles, and the disease was first discovered in germany. http://www.cdc.gov/vaccines/vpd-vac/rubella/fs-parents.html.

German Measles: Three German physicians were involved with the description/ confirmation of Rubella. Friedrich Hoffmann (1740), De Bergen (1752) & Orlow in 1758. A fourth German physician(George de Maton – 1814) differentiated it from the diseases of Measles & Scarlet Fever. This led to the name “German Measles”.