Gritsamada (Sanskrit: गृत्समद) is a rishi, credited with most of Mandala 2 of the Rigveda (36 out of 43, hymns 27-29 being attributed to his son Kurma and 4-7 to Somahuti). Grtsamada was a son of Shunahotra of the family of Angiras, but by Indra's will he was transferred to the Bhrigu family.
In the plural, the name refers to the clan of Grtsamada, so used in RV 2.4, 19, 39, 41.
References
Gritsamada Wikipedia(Text) CC BY-SA