Mennonites are traditionally multilingual with which Low Prussian dialect of East Low German, with Dutch influence language was their first?
Russian Mennonite The Russian Mennonites (German: "Russlandmennoniten" occasionally Ukrainian Mennonites) are a group of Mennonites of German language, tradition and ethnicity, who are descendants of German-Dutch Anabaptists who settled for about 250 years in West Prussia and established colonies in the south west of the Russian Empire (present-day Ukraine) beginning in 1789. Since the late 19th century, many of them have come to countries throughout the Western Hemisphere. The rest were forcibly relocated, so that few of their descendants now live at the location of the original colonies. Russian Mennonites are traditionally multilingual with Plautdietsch (Mennonite Low German) as their first language and lingua franca. The term "Russian Mennonite" refers to the country where they resided after the split from Germany and not to their ethnic heritage. In 2014 there are several hundred thousand Russian Mennonites: about 200,000 in Germany, 100,000 in Mexico, 70,000 in Bolivia, 40,000 in Paraguay, 10,000 in Belize and tens of thousands in Canada and the US and a few thousand in Argentina, Uruguay and Brazil.
Franconian languages Franconian (German: "Fränkisch" ; Dutch: "Frankisch" ) includes a number of West Germanic languages and dialects possibly derived from the languages and dialects originally spoken by the Franks from their ethnogenesis in the 3rd century AD. The languages that evolved in the northern and eastern lands of Francia included Low Franconian, of which present-day Dutch is the primary member, the West Central German Rhine Franconian and Central Franconian dialects (including Luxembourgish), as well as transitional High Franconian German dialects. Linguists have different views about whether these languages and dialects have descended from a single Franconian proto-language, also known as Istvaeonic.