Demetrius

Latinized form of the Greek name Δημητριος (Demetrios), which was derived from the name of the Greek goddess DEMETER (1). Kings of Macedon and the Seleucid kingdom have had this name. This was also the name of several early saints including a Saint Demetrius who was martyred in the 4th century.

DEMETER (1)   female   Greek Mythology
Possibly means "earth mother", derived from Greek δα (da) "earth" and μητηρ (meter) "mother". In Greek mythology Demeter was the goddess of agriculture, the daughter of Cronus, the sister of Zeus, and the mother of Persephone.
EQUIVALENTS
ANCIENT GREEK: Demetrios
BULGARIAN: Dimitar
CROATIAN: Dmitar
FRENCH: Dimitri
GREEK: Demetrios, Dimitrios, Dimitris
HUNGARIAN: Demeter, Dömötör
ITALIAN: Demetrio
MACEDONIAN: Dimitar, Dimitrij
MEDIEVAL SLAVIC: Dmitrei
PORTUGUESE: Demétrio
ROMANIAN: Dumitru
RUSSIAN: Dimitri, Dmitri, Dmitrii, Dmitriy, Dmitry
SERBIAN: Dimitrije, Dmitar
SLOVENE: Dimitrij
SPANISH: Demetrio
UKRAINIAN: Dmytro
DIMINUTIVES AND SHORT FORMS
BULGARIAN: Mitre
MACEDONIAN: Mitre
ROMANIAN: Mitica
RUSSIAN: Dima, Mitya
SLOVENE: Mitja
FEMININE FORMS
ANCIENT GREEK: Demetria
ENGLISH: Demetria
GREEK MYTHOLOGY: Demeter
GREEK: Demi
OTHER FORMS
ENGLISH: Tria