Answer

Yes, Rajgarhia, Metry, and Digga can be found among Jain families, but they should be understood carefully:

• Rajgarhia — Yes, it is known as a surname used by some Jain families, especially connected with place/community identity.
• Metry / Maitri / Metri — It may be found among some Jain families, but spelling and regional usage can vary.
• Digga — It may also occur among Jain families, though it is not among the most widely recognized Jain surnames.

Explanation

In Jain Dharma, a surname itself does not determine whether someone is Jain. Many Jain surnames come from:

• ancestral villages or regions,
• business or occupational identities,
• gotra or clan traditions,
• local language variations,
• larger caste/community groups such as Oswal, Porwal, Shrimal, Khandelwal, Agarwal Jain, Humad, Bagherwal, etc.

Because of this, the same surname may sometimes be used by Jain and non-Jain families.

Spiritual Understanding

From a Jain perspective, identity is ultimately based more on shraddha, achar, and dharma-practice than surname. A person is Jain by faith in Jain Dharma, reverence for Arihant, Siddha, Sadhu, and Dharma, and by following principles such as ahimsa, satya, aparigraha, and self-discipline.

Takeaway

These surnames may be associated with Jain families, but they are not exclusive proof of Jain identity. The family’s tradition, samaj, gotra, temple association, and religious practice give a clearer answer.