Talk:Name of the Czech Republic/Archive 2

Polish connection
Is there any comprehensive source that would support the claim that the name "Czech" entered English via Polish? It is specifically and unambiguously disproved by historian Jiří Šitler in his article cited further in the same paragraph here. English authors used the words Czech, Czechian, Czechish, etc. since the 17th century and their source materials were either Latin books written by Czechs or the Czech originals. The original Czech spelling, which is identical with present-day Polish one, was used in Czech until the 19th century.

Those cited here, here and here seem to be ok, except its basically the same single sentence without any further explanation or corroboration. --Qertis (talk) 11:20, 29 January 2019 (UTC)
 * The origin of the spelling comes from old Czech and not from Polish. The digraph "cz" comes from the old Czech orthography, typical of the West Slavic languages (Czech, Polish), which was transferred into Latin and later also English, to express the pronunciation of /t͡ʃ/ (the IPA key). In Polish, the "cz" digraph is still being used, while in modern Czech it has been substituted by the consonant "č" since the standardization of modern orthography in the 19th century, which was, however, first introduced in the late 14th and early 15th centuries, usually denoting the voiceless postalveolar affricate consonant [t͡ʃ], such as the English "ch" in the word chocolate. Thus the "Č" originated in the Czech language from which it was also adopted by Slovak, Croatian, Macedonian, Slovenian, Bosnian, and Montenegrin, as well as Latvian and Lithuanian.


 * The fact that the spelling of Cz in the word Czech does not come from Polish is further supported by its first recorded use in English in the word “Czechians” by Peter Heylyn in 1625 in his “Mikrokosmos: A little description of the great world. Augmented and reuised.”on page 298: . Peter Heylyn is explicitly referencing Czech sources, including Jan Dubravius: Geog25 (talk) 07:15, 2 August 2019 (UTC)
 * According to the American Heritage Dictionary about the origin and spelling of the word Czech: "Ultimately (partly via New Latin Czechiānus) from Old Czech Czech, a Czech (Modern Czech Čech)." i.e. not from Polish.Geog25 (talk) 15:36, 31 March 2020 (UTC)