Śrī Caitanya Caritamrta · Text Ādi 10.35
শ্রীনৃসিংহ–উপাসক—প্রদ্যুম্ন ব্রহ্মচারী ।
প্রভু তাঁর নাম কৈলা ‘নৃসিংহানন্দ’ করি’ ॥ ৩৫ ॥
śrī-nṛsiṁha-upāsaka — pradyumna brahmacārī
prabhu tāṅra nāma kailā ‘nṛsiṁhānanda’ kari’
The thirteenth branch was Pradyumna Brahmacārī. Since he was a worshiper of Lord Nṛsiṁhadeva, Śrī Caitanya Mahāprabhu changed his name to Nṛsiṁhānanda Brahmacārī.
Read Śrīla Prabhupāda's purport on Vedabase.io