Gesta Hungarorum by Annonymus, chronicle of Simon of Keza, Descriptio Europæ Orientalis, Chronicon Pictum of Vienna, monk Ricardus, Decree of Turda of king Louis I of Hungary are historical sources of european or even hungarain origin (Annonymus), not of romanian origin, so your statemant about Ceaucescu-era historiography falls. Or, mayby, those writers forged the history because they knew that they would support the claims of romanians over Transylavania. L-)

Every nation likes to hijack the history of their country and their region (Hungarians included, Romanians too). Do you agree this statemant, or mayby, hungarians are saints and they do not forge parts of their history???

But presenting minor Oltenian lords as if they somehow have *anything* to do with medieval Transylvania, on the other side of the Carpathians (let alone suggesting that the Vlachs were any sort of serious presence in 9th-century Pannonia), is simply dishonest.
About a roamanian(vlach) and slavic presence in Pannonia talks Gesta Hungarorum. But I didn't said that Seneslau had any conection with Transylvania, but Gelu, Glad and Menumortu had (about them talks Annonymus).

The only serious geographic distortion is yours, Senslau is in Muntenia, Litovoi is in Oltenia

and had fark-all to do with Hungarian transylvania except in the middle of the 14th century
Litovoi fouhgt with Hungary in 13 century.

So, long live Trianon and cheers