Most of us can understand the utility of having a first name since it prevents us from calling everyone we meet on the street, "Hey, you!"

And in many naming customs, surnames are a way to tie us to our family members and express our direct lineage, but why do we have middle names?

Do they have any function, and when do we start doling them out?

The practice of assigning middle names likely traces back to the 13th century.

In his book on the history of names, "The Means of Naming a Social History," author Stephen Wilson notes that, at first, having more than one name was popular, largely among the Italian elites in places like Florence, Perugia, Venice, and Rome.

And in Gascony, a region in southwest France, having two first names came into play among the elite as early as the 11th and 12th centuries.

By the 1400s in Italy, we start to see middle names pick up in popularity in Europe and among the well-to-do, the preferred names came from those of saints in the Catholic church.

The logic was that naming a child after a saint would offer additional protection, so middle names were kind of like the baby proofing of the 1400s.

By the 18th century, Europeans from all social classes began giving middle names to children on a more common basis, and in the 19th century, second names were an accepted practice across Europe and in the U.S.

So, what happened?

Well, in the years between 1400 and the 18th century, middle names in certain parts of Europe became less associated with the elite and more to do with specific naming trends in particular countries.

For instance, in languages like French, English and Italian, middle names were ornamental or were just a way to tell people apart as the population swelled, so if there were six guys named John Doe in your village, then it was helpful to have a John Marcus Doe, a John James Doe, et cetera, just for clarity.

In others, people went by different names at different points in their lives, and for others still, middle names served as a way to pass on a popular family name without having everyone go by the same moniker.

So you get to honor your great-grandma Eunice in a more discreet way.

But in other countries and languages, middle names serve a similar purpose to surnames, namely to connect people to their paternal lineage, so it's less of a middle name and more of an extension of the family name.

These kinds of names are patronymic, meaning that they're derived from a father, although in some instances, patronymics can be drawn from another male ancestor.

The language that uses patronymic middle names that you're probably most familiar with is Russian.

In Russian, it's common for people to have a first name followed by a patronymic and a surname.

The modern Russian patronymic takes a distinct form that's broken down into two parts.

Male patronymic names typically end in "ovich" or "evich," while female patronymic names end in "ovna" or "evna."

So, a man with the name Alexander and the patronymic Ivanovich would be "Alexander son of Ivan."

But patronymics also stretch back hundreds of years and across continents and cultures.

For example, Wilson notes evidence of patronymic middle names in the North African regions that were part of the expanded Roman empire.

Romans of a higher rank sometimes had a three-part name consisting of a praenomen, or personal-slash-first name, a family name, or nomen, and a cognomen, which served as a sort of nickname.

After the Roman defeat of Carthage located in modern-day Tunisia in 146 BCE, patronymic names were adopted that blended Roman naming customs and the Punic names favored by Carthaginians to create a new tradition.

This system is pretty similar to the Hebrew naming practices I discussed in "What was Jesus' Real Name?"

so if you're interested in hearing about that, be sure to check out that video after this.

And to add just another layer to the mix, the title middle name may not even be useful in other languages where family names and surnames come first, and second names are an extension of your personal name and not a middle name at all.

So, if you have a Korean or Chinese name, your family's name would come first, followed by your personal names, which means that in this order, it would be surname, personal name, second personal name.

So, the moniker and concept of a middle name truly only works for certain languages and in other languages and regions, the middle name is also not a personal name, but another form of family address.

So, if you have a Spanish name, depending on your country of origin, your middle name can be drawn from your maternal side or from a series of names meant to show the extent of your family tree.

For example, Spanish painter Pablo Picasso's full name was a whopping 20 words, which you could read right here.

And... great, you're all caught up.

But while he tested out a few combinations of names in his early career, he ultimately settled on the moniker that we all know him by today, which was two words.

But while today in the U.S., it's not all that common to see people with more than one personal name, since even people with multiple names usually stick to one or the other, the middle initial also saw some increased popularity in the 20th century, at least according to a 2014 article in "The New York Times" by Bruce Feeler.

Feeler notes that middle initials for writers, which used to be a staple of many book covers, slowly dropped in popularity from the end of the 20th century and into the early 2000s.

Seven U.S. presidents used middle initials, from Franklin D. Roosevelt up to Gerald R. Ford, although President George W. Bush did bring the middle initial back to the Oval Office to avoid confusion with his presidential father.

Social scientists Tilburg and Igu also known in their article that people who use middle initials in fields like medicine, academia, and law were evaluated more favorably on things like writing, status, and intellectual performance.

So, while middle initials may be on the decline for John Q.

Public, myself included, they still serve a function in certain fields.

Well, it seems like the middle name is essentially the sixth toe of the naming world.

It's not always useful or functional, sometimes we inherit it from our ancestors, and it's always pretty fun to look at.