It was Thirugnanasambandhar who mentioned his name along with the word 'Tamizh'.
He has mentioned like this in more than 40 places.
He has understood the Tamizh language deeply.
He has mentioned like:
Tamil Gnanasambandhan
Marai Gnanasambandhan
Kalai Gnanasambandhan
Tamil Viragan
Natramil Gnanasambandhan
Tamilkezhu Viraginan
Tamilnadu Sambandhan
Sentamizh Viragan
Tamil kizhamai Gnaanan
Tamilnathan Sambandhan
Isai Gnanasambandhan
Tamizhaagaran
Iyal Gnanasambandhan
By mentioning 'Tamizh' before his name, Thirugnanasambandhar established unity based on language.