See also Zablocki, Zablocki v. Redhail.
Zabłocki (feminine: Zabłocka, plural: Zabłoccy) is the name of a Polish aristocratic family of ancient lineage (Jastrzębiec) and Coat of arms Łada, who assumed the name of Zabłocki after acquisition of Zabłocie Pułtuskie in Wielkopolska in the year 1500. The ending "-cki" represents the English "of"; Zabłocki = of Zabłocie; or German "von Zabłocie".
on red background, a silver horseshoe with opening to the South, on its top a golden cross; on each side a silver arrow and two hunting horns in the lower field. On the helmet there is a golden and crowned lion holding a sword. This coat of arms was first mentioned in 1248. It was named after the owner of the Łada estate who was a member of the Jastrzębiec family and the progenitor of the Zabłocki family.
A Polish saying for a shrewd business plan to result in a major loss, “wyjść jak Zabłocki na mydle” arose from a semi-legendary misadventure of Cyprian Franciszek Zabłocki (1792–1868). His properties in Rybno included a manufacture of soap which he intended to export abroad via the port in Gdańsk. Transported by river, the barge had to pass Prussian border. In order to avoid high tariffs, Zabłocki decided to smuggle the soap by placing waterproofed crates underwater, dragged at a distance behind the barge. He successfully passed the customs, but alas, the waterproofing on not a single crate held, leading to a total loss of cargo.