Devarddhi Kṣamāśramaṇa

The last name in the string: Kṣamāśramaṇa Devarddhi of the Kāśyapa gotra, praised in the closing verses with Jambū, Nandita, Deśigaṇin, Sthiragupta and Dharma Gaṇin. Under him the council at Valabhī wrote down the canon that had been carried in memory since Mahāvīra.

The map puts him at the root, because the tree was drawn to end there: the list closes with the man who closed the oral age. The year — 980 after Mahāvīra, or 993 — is tradition, and both readings are given.