Recent genetic research prove that this pledge has a factual basis. Both Polish and Hungarian populations have the highest frequency of the R1a Y gene in Europe. Two people will have the same Y chromosome marker only if they originated from the same father.
Luk, i said many times that Hungarians are Slavs by origin. That is well known historic fact.
On the territory of today`s Hungary was core of old Great Moravia. Before that, region was part of Sarmatia Europae. I would also underline that Hungary is positioned in Panonia. Word Panonia = Zemlja Pana/Panova Zemlja (land of masters), coming from Polish word `Pan` and suggests that Panonia as area was under influance of Polish language or to say, old Slavic warlords from Polish speaking area.
But, those Slavs are spiritualy hungarized, with tendency to be germanized. From my expiriance with Hungarians (from Voivodina/northern Serbian province), they are, among themselves strongly racialy divided. Blond and brown haired/eyed (Europoids) Hungarians consider black haired (Hun eyes looking) as true Hungarians. More or less, they (Europoid Hun.) are aware that they originates from assimilated Slavs but it is `public secret` which they tries to avoid to comment- its taboo.
Hun (black) looking Hungarians, don`t like to mix with Slavs (nor Slavs with them- Serbs and Slovaks, speaking about Voivodina) but they like to mix with blond or brown Hungarians. They are proud with Atila and they consider themselves as bearers of true Hungarian heritage.
In general, there is much more Slavic looking Hungarians then those who are Hun looking. About 85:15 %, in my oppinion.
In my oppinion, in different historical circumstances, Slavic looking Hungarian population would be proud Slavic, again. In world without German domination.