अरण्यां मध्यमानायं प्रादुर्भूतो महातपाः। मथनान्मिथिरित्याहुर्जननाज्जनकोऽभवत्॥ यस्माद्विदेहात्संभूतो वैदेहस्तु ततः स्मृतः। एवं विदेहराजश्च जनकः पूर्वकोऽभवत्। मिथिर्नाम महातेजास्तेनायं मैथिलोऽभवत्॥
araṇyāṃ madhyamānāyaṃ prādurbhūto mahātapāḥ| mathanānmithirityāhurjananājjanako'bhavat|| yasmādvidehātsaṃbhūto vaidehastu tataḥ smṛtaḥ| evaṃ videharājaśca janakaḥ pūrvako'bhavat| mithirnāma mahātejāstenāyaṃ maithilo'bhavat||
English Meaning
They being thus engaged in churning the edy for the purpose of having a son of Nimi there sprang up a son of devout austerities. He was called Mithi for he originated from Manthana; he was called Janaka for his having sprung up from Janana and Vaideha from having been born from Videha. In this wise Janaka, the first king of Videhas, was born. His other name was Mithi and his family were celebrated as Maithilas.
— M.N. Dutt (1891–94, public domain)