Final answer:
Thirty immediate family members of Bhai Mani Singh were martyred for the Sikh Panth, showing their dedication and sacrifices for their faith during conflicts in the 18th century.
Step-by-step explanation:
The number of immediate family members of Bhai Mani Singh who were martyred for the Sikh Panth is 30. Bhai Mani Singh was a prominent Sikh figure in the 18th century, revered for his role as a scribe of the Guru Granth Sahib as well as his leadership in the Sikh community.
His commitment to Sikhism led to the martyrdom of a significant part of his family as they were involved in conflicts defending their faith against oppressive rulers.