I want to know the answer to the following question:
Who first used the term Irano-Aryan?
All the background I'm provided with is that "Robert Needham Cust used the term Irano-Aryan in 1878, and Orientalists such as George Abraham Grierson and Max Müller contrasted Irano-Aryan (Iranian) and Indo-Aryan (Indic).". Is that enough to answer the question?
Answer: yes