Orinthia may have been based on Ancient Greek orī́nō meaning “to excite, to stir, to agitate” or it may have been an elaborated form of Orinda, which may have been based on Latin orior meaning “to rise” from a PIE root. It may also have been based on Old Irish ór (gold) which comes from Latin aurum (gold) derived from a Proto-Indo-European root word *h₂ews- (to shine; dawn, east). The first use of Orinthia that I could find was in 18th century England, used by poet Elizabeth Teft in a book of poems titled Orinthia’s Miscellanies (1747). Orinda was used as a pseudonym for Anglo-Welsh poet and translor Katherine Philips (1631/2-1664) and perhaps Teft was inspired by it.
Origin: Ancient Greek, Proto-Indo-European
- Orinthyia (English)