Step 1: Concept Identification:
The query seeks to name the founder of the significant Bengali theatre collective, 'Bohurupee'.
Step 2: Elaboration:
'Bohurupee' stands as a pivotal theatre organization in the narrative of post-independence Bengali dramaturgy. Established in Kolkata in 1948 by Sombhu Mitra, alongside collaborators such as Tripti Mitra. The ensemble presented seminal stagings of works by Tagore, Ibsen, and Sophocles, playing a crucial role in the Group Theatre Movement in Bengal.
Step 3: Conclusive Response:
Sombhu Mitra was the founder of 'Bohurupee'.