Quizzically Yours

X was originally a nymph but became immortal after marrying Agni. In some versions, she is one of the many divine mothers of Karttikeya. She is considered as a Daughter of Daksha. She is taught to preside over burnt offerings. Her body is said to consist of the four Vedas and her six limbs are the six Angas of the Vedas. Sometimes she is represented as a wife of Rudra.

Who is X...??

Kay Chan gets this one

The answer is Svaha