Plancio
Plancio is a Latin form of Plancius, meaning “the name of a Roman; a friend of Cicero”. It is the ablative singular masculine noun or dative singular masculine noun.
Found 34 times in the Latin texts on Socratos.
Where it is used
Cicero, Letters to Atticus 3.14.2: … itatem et cotidianam exspectationem rerum novarum non commovi me adhuc Thessalonica. sed iam extrudimur non a Plancio (nam is quidem retinet) verum ab ipso loco minime apposito ad tolerandam in tanto luctu calamitatem. in Epiru …
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.