Giani Garja singh

Giani Garja singh spent his lifetime collecting and ananlysing Bhatt and Pandey Vahian. He was also an expert on Bhai Mani Singh.

References:-

* Shahid Bilas (Bhai Mani Singh) - Ed. Giani Garja Singh

* Bhatt tey Pandey Vahian - Guru Kaal dey Itihasik Sarot Vajon Yogdan (Gyani Garja Singh dey Note) - Jatinderpal Singh Tract No. 542