From Old Norse Njörðr, which was possibly derived from the Indo-European root *ner meaning "strong, vigourous". Njord was the Norse god of the sea, sailing, fishing and fertility. With his children Freyr and Freya he was a member of the Vanir.
Origin of the name Freya: Feminine form of Frey (lord, he who is foremost), Freya has the definition "lady, mistress, noblewoman." In Norse mythology, Freya was the goddess of fertility. A daughter of Njord and a sister of Frey, Freya was the most beautiful of the goddesses.