GALENmEnglish Modern form of the Greek name Γαληνός (Galenos), which meant "calm" from Greek γαλήνη (galene). It was borne by a 2nd-century BC Greco-Roman physician who contributed to anatomy and medicine. In modern times the name is occasionally given in his honour.
SEIJAfFinnish Derived from Finnish seijas meaning "tranquil, serene".
SERENAfEnglish, Italian, Late Roman From a Late Latin name that was derived from Latin serenus meaning "clear, tranquil, serene". This name was borne by an obscure early saint. Edmund Spenser also used it in his poem The Faerie Queene (1590).
SERENITYfEnglish (Modern) From the English word meaning "serenity, tranquility", ultimately from Latin serenus meaning "clear, calm".
SHILOHm & fBiblical From an Old Testament place name possibly meaning "tranquil" in Hebrew. It is also used prophetically in the Old Testament to refer to a person, often understood to be the Messiah (see Genesis 49:10). This may in fact be a mistranslation. This name was brought to public attention after actors Angelina Jolie and Brad Pitt gave it to their daughter in 2006.
STELLANmSwedish Meaning unknown, perhaps related to Old Norse stilling"calm", or perhaps of German origin.
TYYNEfFinnish Derived from Finnish tyyni meaning "calm, serene".
VAIKEfEstonian From Estonian vaikus meaning "silence, calm". This name was coined by Andres Saal for a character in his story Vambola (1889).
YASENmBulgarian Means both "ash tree" and "clear, serene" in Bulgarian.