This is what we found on Wikipedia regarding the Bismil:

Ram Prasad Bismil (11 June 1897 – 19 December 1927) was an Indian poet, writer, and revolutionary who fought against British Raj, participating in the Mainpuri Conspiracy of 1918, and the Kakori Conspiracy of 1925. He composed in Urdu and Hindi under pen names Ram, Agyat (anonymous) and Bismil (wounded), becoming widely known under the latter. "Bismil" was not his real surname; it was his pen name. Pandit was an honorific title rather than a family surname conferred to him due to his specialised knowledge on several subjects. He was also a translator.

Bismil was associated with Arya Samaj and was one of the founding members of the revolutionary organisation Hindustan Republican Association.

He was hanged on 19 December 1927 for his revolutionary activities.