The name Myrtha is best understood as a variant, modern spelling, compound, or stylistic form connected to Myra. The root name Myra has origins in Greek, Sanskrit, and English usage and is generally associated with the meaning myrrh, wonderful, or beloved depending on root. This gives Myrtha a connection to the sound and symbolism of Myra, while allowing for a more distinctive or contemporary spelling. Because Myrtha itself may not have a separate ancient etymology, its meaning is most safely traced through the better-documented root name Myra.

The root form of Myrtha is Myrtha — meaning "Formal and simple femenine name".

Myrtha remains a beloved choice. Timeless appeal across cultures and generations.