Who made the term popularised that is the nationalism of Suhaldev? 
Suhaldev: Suhaldev is a semi-legendary Indian king from Shravasti, who is said to have defeated and killed the Ghaznavid general Ghazi Saiyyad Salar Masud in the early 11th century. Hindutva: Hindutva ("Hinduness"), a term popularised by Vinayak Damodar Savarkar in 1923, is the predominant form of Hindu nationalism in India.
Vinayak Damodar Savarkar