Chapter Temir to Tendo Achillis of T by Brewer's Readers Handbook

the death of Cassibelan the crown came to Tenantius, who refused to pay the tribute to Rome exacted from Cassibelan on his defeat by Julius Cæsar.

Tendo Achillis, a strong sinew running along the hee’ to the calf of the leg. So called because it was the only vulnerable part of Achillês. The tale is that Thetis held him by the heel when she dipped him in the Styx, in consequence of which the water did not wet the child’s heel. The story is post-Homeric.