People who study contemporary baby names often like to talk about “made-up” names, whether unusual names found in late 20th and early 21st C America or more “traditional” made up names coming from late 19th and early 20th C literature. Now, if you think about it, all names are, at the root, “made-up”. But if you want to make a distinction between names which are drawn from identifiable word or concept — for example, Bona (Latin ‘good’) or Heather (a plant word) — and names which are constructed without regard for their meaning, such as Germanic Everbern deriving from themes meaning ‘boar’ and ‘bear’, or dithematic names which are constructed on the basis of the themes of the parents’ names, for example when Aclehardus and Teudhildis have a son named Teuthardus and a daughter named Aclehildis, then you could argue that the latter are ones that are truly “made-up” in the relevant sense.
But just as there are many names which people think are medieval but in fact are modern, many names which people think are modern coinages actually have a much older history. When I came across this article, on 17 Baby Names You Didn’t Know Were “Totally Made Up”, a few days ago, I was surprised at how many of these so-called modern “made-up” names are actually not.
Wendy: The received wisdom is that J.M. Barrie coined this name for Peter Pan. In fact, a Wendy Oxford was christened in 1615 in Harston, Cambridge, England. So, not quite medieval, but far older than the 20th C.
Cedric: Like Wendy, this is commonly cited as a coinage of Sir Walter Scott for Ivanhoe. It, too, goes back to (at least) the early 17th C. Cedric Holle was christened in 1613 in Plymouth, Devon, England, and Cedric Jorye was christened in 1626 in the same city.
Miranda: This name occurs in Périgueux, France, in 1366-1367.
Amanda: This name can be found in England in 1221.
Dorian: This name can be found in Paris, France, in 1421 — where it occurs as a feminine name, rather than a masculine one.
Cora: Cora and the diminutive Corina are both found in Imola, Italy, in 1312. The name Corella, found in Valencia in 1510, may also be a diminutive of Cora.
In the comments on the article, someone offers Stella as another modern coinage; but Stella can be found in Rome in 1527.
So there’s a brief round up of names which many people think are modern, but which are actually medieval (or at least early 17th C).