Iestyn as a Baby Name. Meaning and Origin of Iestyn

What is the meaning of the name Iestyn ?

The baby name Iestyn is a Male name , 2 syllables long and is pronounced YES-tin (IPA: /ˈjɛstɪn/).

Iestyn is Welsh in Origin.

Iestyn is a traditional Welsh masculine given name, pronounced YES-tin. It is the Cymric form of the Latin Justinus, ultimately from Justus, carrying the sense of “just, upright, righteous.” The -yn ending is a familiar Welsh masculine suffix, and the name has long been embedded in Welsh-language culture.

Medieval records link Iestyn to local saints - commemorated at churches such as St Iestyn’s, Llaniestyn in Gwynedd - and to Iestyn ap Gwrgant (d. c. 1093), the last native ruler of Morgannwg (Glamorgan). After steady but modest survival in family lineages, it saw renewed use in the 19th–20th‑century Welsh cultural revival and remains most common in Wales today. Variants include Iestin (Welsh) and Latinized Iustin; related English forms are Justin and the modern spelling Justyn. Feminine counterparts are Justina/Justine; a rare Welsh feminine form Iestina appears occasionally.