Perhaps it deries from Romany-Sebory in Mazowsze
Believe me, I was not searching for Romany-Sebory, but for something completely different, and here pops up this treasure trove: "Herbarz szlachty gniazdowej parafii Krzynowłoga Mała, położonej w powiecie przasnyskim, w ziemi ciechanowskiej, województwie mazowieckim." (Heraldy of coats of arms of lesser nobility from parish Krzynowłoga Mała, Przasnysz County, Ciechanów Land, Mazovia Voivodship).
akson.sgh.waw.pl/~apszczol/kmherb.htm, What a bonus!
Krzynowłoga Mała is a municipality, an administrative commune (gmina) to which Romany-Sebory belongs - together with several other "Romany-like" villages: Romany-Fuszki, Romany-Janowięta, and Romany-Sędzięta.
According to the Heraldy the family
de Romany (supposedly of Roman origin), Ślepowron coat of arms was related to a Hungarian branch Hunyady, Korwin coat of arms. They initially (since 13th c) owned
Romany village in the parish Krzynowłoga Mała. In 15th c. they changed their surname to Roman. According to the early 15th century documents family of de Romany was very active settlement-wise. They quickly subdivided into two main lines: Wisko line (Romany village near Szczytno) and Przasnysz line. The latter was subdivided into three groups:
+ Southern one, with villages from Krzynowłoga Mała Parish: Romany-Fuszki, Romany-Górskie (mountainous), Romany-Janowięta (descendants of Jan), Romany-Kosiorki, Romany-Misie (bears), Romany-Powije, Romany-Rzytki (asses),
Romany-Wszebory (descendants of
Wszebor), Romany-Zdrzyski i Romany-Złotokierz (golden bushes).
+ Western one: Romany-Zalesie (beyond a forest)
+ Northern one, belonging to Krzynowłoga Wielka, along the little river Krzynowłoga aka Ulatówka. The villages are known as: Romany-Borki (small coniferous forest), Romany-Janki (descendants of Jan), Romany-Karcze (clearings in a forest), Romany-Sędzięta (descendants of a judge), Romany-Ślepowrony (Ślepowron=Roman family coat of arms), Romany-Zajki and Romany-Skierki
The Romans, extensively branched in the Middle Ages, and in later centuries were the owners of farms and portions of various noble estates, in most parishes of Przasnysz county, and the surrounding counties. In 1676 alone there were 22 families sharing Roman surname in parish of Krzynowłoga Mała alone. The Romans today belong to one of the largest families in the Przasnysz region. In 1990, 275 people by the name of Roman lived in Ciechanow voivodship (the old administrative division), 324 - in Ostroleka, and 322 - in Olsztyn. In total, this constituted 16% of all those bearing that surname in Poland.
The Heraldy does not mention Romany-Sebory though, but it seems that this village used to be known as Romany-Wszebory. This information comes from two sources:
1. Gazeta Warszawska, R. 112, 1885, nr 190 + addendum, ebuw.uw.edu.pl/dlibra/plain-content?id=77129
Mentions auction of: Romany Wszebory vel Sebory
2. Miejscowości Suwalszczyzny i ziem przyległych w końcu XIX wieku, linia-polnocna.internetdsl.pl/SGKP/litera_R.html
Lists Romany-Sebory (Wszebory)
Wszebor is an Old Polish masculine name, made of two parts: Wsze- ("wszystek, każdy, zawsze") [all, everything, always] + -bor ("walczyć, zmagać się")[to fight, to struggle]. Wszebor therefore means: one to whom fight is everything in life. It has several variations: Wszebor, Wszabor, Wświebor, Świebor, Śwsiebor, Siebor, Siabor, Szabor, Szebor, Wszeborz, Świeborz, Śwsieborz, and Sebor.
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Based on this information, one may generalize a
transition from surname Wszeborowski to Seborowski. There are altogether 419 people in Poland with surname Wszeborowski : Kolno 129,
Grajewo 46, Pisz 40, town of £omża 24, Gdański 21, £omża 17, Zambrów 15, etc.
I therefore stand corrected: Seborowski is not a misspelled surname Zaborowski, but a variation on surname Wszeborowski.