Today's town called Dąbrowa, located in the Mazowieckie Voivodeship, Siedlce County and Przesmyki commune, was called Duplewice until the 1930s. The fact of changing the name was noted in the Announcement of the Minister of Internal Affairs Felicjan Sławoj Składkowski of October 17, 1930. The initiator of the name change was teacher Jan Dąbrowski.
The root of the first name has its explanation in the meaning of the word "du" in the Proto-Indo-European language. It means something double. So far, the inhabitants divide it into "Small village" (northern part) and "Big village" (southern part, from the side of Kaliski village).
The name Duplewice appears in previously known written documents from the 15th century. At that time, the village belonged to the Grot family, Rawicz coat of arms. Their progenitor was a knight named Grot mentioned in 1452, who is known to have owned the nearby estate of Tokara and held the office of the Drohiki army. His widow Anna and their son Leonard (1475) inherited from him.