Some call it the Norse Religion, Viking Mythology, and the Viking Religion, but the most correct is Norse Mythology.
The name of Surtr's sword in Norse mythology is "Surtalogi".
Hestia is the Greek goddess of the hearth, home, and fire; she is not a part of Norse mythology.
BaduhennaBaldrBeylaBiliBragiDelligrEirEostreForsetiFreyjaFreyrFriggFullaGefjunGersemiGerdrGnaHariasaHeimdallHelHermodarHilnHrethaHnossIlmrIdunnIrpaLodurrLofnLokiNannaNojordarOdinSaxnotThorTyrUllrValiVidarrVeVili(Just to name a few)
In Norse mythology, Thor does not have a thunderbolt for a weapon nor named.
Perhaps you could get some ideas from Norse Mythology, or Ancient Egyptian Mythology, Japanese Demonology, or other myths. There are many name ideas to choose from.
Valhalla.
There is not a Norse name for Artemis the Greek goddess. They are two very different cultures.
In Norse mythology, the name of the supreme creator god is Odin. He is considered the chief of the Aesir gods and is associated with wisdom, war, and magic.
There were no gorgons in Norse mythology. However, the goddess Hel is sort of like Medusa.
The goddess of love in roman mythology was Venus. Her greek name was Aphrodite. A part from those, she had no other names. If you mean other goddesses of love, then - Egyptian Mythology - Isis Sumerian Mythology - Ishtar Norse Mythology - Freya Hindu Mythology - Radha Aztec Mythology - Tlazplteol
He probably read the Norse Mythology because Gandalf was a Dwarf's name in the Norse Mythology. There are many other names J.R.R. Tolkien took for his story like Elrond; Saruman; Mordor; Iluvatar; Aragorn and many more.
Thor's hammer is traditionally known in Norse mythology as some variation on "Mjolnir."