Alternate History

Brythonic Language (Principia Moderni II Map Game)

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The Brythonic (Brythonec) Language is a language, derived from Welsh, Breton, Scottish, Irish, and English, that was the official language of Great Brython until its eventual collapse. The language is still semi-official at local levels throughout the post-Brythonic Alban Isles, and is official in De Mor Tir.

The language was created in 1763 by the Brythonic Lingusitic, Heraldic, and Vexillogical Society (BLHVS) in response to the need of a common language between all of Great Brython.


The development of the Brythonic language was a phenomenon that occurred under the reign of King Evan III. After uniting his holdings and vassal states into Great Brython, Evan decided that there was a need for one society which could manage the development of the Welsh language.

Once the BLHVS was established, the Royal Linguist was tasked with forming a language to replace Welsh as the official language of Great Brython, "a language that is understandable by all peoples of the Albanic Isles." Development started officially in 1763, and ended (officially) in 1767.

During the process, some outspoken nationalists in Parliament stood against the language, calling it, "a toned-down Welsh to make the English feel more inclined to learn it." This criticism was proven unfounded, as the basis of Brythonic came from English - not Welsh!



The BLHVS recognizes three main groups of language which they used to form Brythonic - the Welsh family, the English family, and the Gaelic family.

In order to prevent upheaval, the BLHVS has published a full document stating the changes from each language. The main changes are highlighted below.

  • From Welsh:
    • Many digraphs are replaced by a single letter.
    • "W" is no longer a vowel
  • From English:
    • "Y" is no longer a consonant
    • Pronoun no longer needed
  • From Gaelic:
    • No more accents


The alphabet of Brythonic, in comparision to the alphabets of the Welsh family, the English family, and the Gaelic family.

  • Brythonic (20)
    • a, b, c, d, e, f, g, h, i, l, m, n, o, p, r, s, t, u, w, y
  • Welsh (28)
    • a, b, c, ch, d, dd, e, f, ff, g, ng, h, i, l, ll, m, n, o, p, ph, r, rh, s, t, th, u, w, y
  • Breton (25)
    • a, b, ch, c'h, d, e, f, g, h, i, j, k, l, m, n, o, p, r, s, t, u, v, w, y, z
  • English (26)
    • ​a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z
  • Scottish (18)
    • a, b, c, d, e, f, g, h, i, l, m, n, o, p, r, s, t, u
  • Irish (23)
    • a, á, b, c, d, e, é, f, g, h, i, í, l, m, n, o, ó, p, r, s, t, u, ú

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