There is a lot of power in names and naming, so today I want to look at the way we see that played out in mythology and folklore. I thought this would be a good topic to discuss in particular because of the confusion I sometimes see around the idea of True Names and magical names within modern paganism. So let's look at what True Names and magical names are, and the difference between them, with some examples from mythology and folklore.
A True Name is the name that resonates with a being's soul or otherwise identifies that being on the deepest level. This is not necessarily the name you are given by your parents at birth, although we'll look at the power that your birth name can have later. Your True Name is a deeper metaphysical thing, something that you may or may not ever find if you are human, and something that you guard as more precious than your life. Knowing a being's True Name gives you power over that being and allows you a level of control of them. In the Cath Maige Tuired we see this when the Dagda encounters a Fomorian princess who demands he carry her on his back; he refuses until after asking him his name three times* he is forced to reveal his True Name, and knowing it she repeats the request using it and he is forced to comply. In the familiar story of Rumplestilskin we see knowledge of a True Name as the only way for a woman to get out of a contract she has made with a dwarf. This motif and variations of it are found throughout Europe, with either the firstborn child or the woman herself as the agreed upon pay for the Otherworldly being unless the Name can be discovered. Knowing a True Name means knowing the true nature of a being which allows that being to be commanded against their will, and this is exactly why knowledge of a True Name was hidden.
As I mentioned, your birth name does also have power over you. Perhaps anyone who has ever experienced an angry parent yelling their full name at them is already aware of this. Seriously though, even though your birth name is something given to you by others it has the power of blood and kinship bound up in it, and it is tied to your soul all the same, although not as strongly as your True Name. In most folklore it was understood as unwise to give your name to Otherworldly beings, because knowledge of your birth name gave them knowledge of you to some degree. We see examples of this in stories such as 'Maggy Moulach' where a fairy (in that case a Brownie) futily loves a mortal; when he had asked her name, she told him it was 'Me Myself'. The young woman eventually is forced to throw boiling water on the amorous fairy, mortally wounding him, and when he was later asked who had harmed him he answered 'Me Myself' preventing his mother from seeking revenge against the girl. Names have power, even the ones our parents have given us.
As adults we can choose our own names. We can assume nicknames, or we can even (in most countries as far as I know) legally change our names. There is a long and deep seated tradition of adults changing names to shed the name they were given at birth and assume a new name as an adult, usually to better reflect who the person was. We see this in mythology with Setanta becoming Cu Chulainn; Gwion Bach becoming Taleisin; Deimne becoming Fionn Mac Cumhaill. There is power in naming ourselves, but we should choose wisely as well, because just like birth names the names we give ourselves hold power over us and create connections. Cu Chulainn taking his name also meant taking a gies against eating dog meat, and it his fate was bound up in that taboo.
It is from the power that your name has, I believe, that we see magical names coming in, particularly in ceremonial magic. A magical name was originally meant as a pseudonym, a way to keep your identity hidden from spirits and likely to act as a layer of magical defense from unfriendly people, witches and non-witches. Or perhaps we might say more aptly it was used to create a specific alternate identity for dealing with them. Magical names, like any good persona, were about creating an ideal image for the self, rather than a true reflection of the self. So, for example someone's True Name might be Echaire [horse-keeper] but they may take a magical name that is much grander and more impressive sounding like 'Storm Raven' or 'Ocean Rider'. People also often use the names of deities, mythic heroes, famous magicians of the past, and powerful animals for their magical names. Magical names did build power with use, but could also be shed and remade as needed. Think of them a bit like clothes or armor. Even with this though there was historically usually a layer of secrecy between a person's magical name and real name, an attempt to keep the two separate and distinct, so that in ritual or with fellow practitioners no other name would be used except the magical, and outside of those contexts no name except the birth name would be used.
At some point in the modern era I think the ideas of True Names and magical names were confused somehow, so that people began to think that a magical name was supposed to be a true reflection of self rather than a projection of power and confidence. From this we start to see two things happening, firstly magical names that are intended to reflect as much of a person's soul as possible, and secondly the public use of magical names in non-magical contexts. Or basically the entire concept of magical names became less about esoteric spirit work naming and more of a tribal assuming-a-new-name-with-a-new-community process. One is not better or worse than the other, but they need to be understood as distinctly different things. A public name that you use because you feel it fits you better than the one your parents gave you, isn't a magical name. And it isn't your true name either, or I hope it isn't if your sharing it around so publicly.
Names have power. We can take control of that power by choosing what we want people to call us, by naming ourselves. Even assuming a nickname is an act of power. We can use magical names. We can even seek, and sometimes find, our True Name But we shouldn't forget the lessons that mythology and fairy tales have taught us about the value of the power of the names and the need to guard the names that mean the most to us. Not all names are meant to be shared.
* there is also significance to the repetition of the number three, and of asking a question three times.