Gotra — Lineage of Flesh and Spirit
Gotra (literally 'cow-pen'; by extension, 'lineage protected by an ancestor') is the patrilineal clan designation traced back to one of the ancient Vedic ṛṣis. Each brahmin family (and by extension all traditional Hindu families) belongs to a particular gotra — such as Bharadvāja, Kaśyapa, Vasiṣṭha, Viśvāmitra, Ātreya, Gautama, etc. The gotra is a fundamental identity marker in traditional Hindu life, governing marriage rules (exogamy — one must not marry within the same gotra) and ritual procedures.
In Śrī Vaiṣṇava understanding, the physical gotra denotes one's birth-lineage and continues to be used where Vedic and family rites require it. Pañca-saṃskāra does not ordinarily erase or replace that birth-gotra. What initiation establishes is Āchārya-sambandha: a spiritually decisive relationship through which the disciple enters the guru-paramparā and receives the marks, name, mantras, and discipline of Bhagavad-kainkaryam.
The Āchārya is therefore honoured as the giver of spiritual birth, but this theological parentage should not be converted into the factual claim that a Bharadvāja-gotra disciple begins identifying as Kāśyapa-gotra merely because the initiating Āchārya belongs to that gotra. Birth-gotra and Āchārya-paramparā are related dimensions of identity, not interchangeable ritual categories.
Through Āchārya-sambandha the disciple becomes connected to the full lineage of teachers leading through the Pūrvācāryas to Nammāzhvār and Bhagavān. This spiritual belonging deepens, rather than administratively replaces, the person's inherited gotra identity.
For the prapanna, gotra in its deeper sense points to the truth that one's ultimate origin (mūla) is Bhagavān Himself — every soul's 'gotra' traces back to Bhagavān, who is the mūla-bhūta (original basis) of all existence.