I came across a text similar to the Smritis or Law Books which is called the Harita Samhita.
He seems to be somebody of significance because his laws are repeated by Rishi Markandeya in the book. The rishis also refer to him as the son of Bhrigu:
This could either imply that he was a direct son of Bhrigu RIshi or someone who belonged to his lineage. But the only information I could get on him was a vague mention in the Charak Samhita:
Now Punarvasu, out of friendliness, and prompted with compassion for all creatures, bestowed the virtuous Ayurveda upon his six disciples- Agnivesa, Bhela, Jatukarna, Parasara, Harita and Ksarapani. Su1#30-31
So my question is - who exactly is this Rishi Harita?