The story
The Wiltshire place-name may come from Old English *Claringa dūn, the hill associated with Clare (a personal name). The parish in New Brunswick was named after a settlement, named in turn after British politician George Villiers, 4th Earl of Clarendon (1800 - 1870). The typeface was named after the Clarendon Press, which was named after the Earl of Clarendon (a former chancellor of Oxford University).
Etymology from Wiktionary, CC BY-SA 4.0.