The largest group is from Bukowsko Gmina, Sanok District, Poland. This part of Podkarpacie was annexed by Poland in the 14th century. In 13th century after the Tartar (Mongolian) invasion, Polish king Casimir III Great invited German and Polish colonists to settle in certains regions with lower density of population. These Germans and Poles lived in towns as free citizens unlike the most Rusins that were serfs (until 1785 or even 1848) of nobility. Many sources refer to these Germans ( or polonized-Germans) as to Śląsk (Schllesien) and Saxonians, however, it seems to be more probable that they came from Erfurt and Bamberg via Hungary. The Silarski (Silar) family is one the orginal families that came to Podkarpacie in the 14th century. Some of them moved to the USA and Germany in the second half of the 19th and beginning of the 20th century. Today, the majority of Podkarpacie Silarski people lives in the USA and Poland, especially Chicago and New Jersy area, many live also in Canada (Silarski), Australia, France (Silarsky), Germany (Schilarski), Hungary (Szilarki, Silarszky), Czech (Silarsky), Slovakia ( Szilarsky, Śilarski ) and elsewhere. All these people are relatives!.

Their name is actually only a Polish spelling (Silarski) of the German form of the slang name Silar, originally an German word meaning "Scheler - from old german : schëlch, ang. cross-eyed". This is a very homogenous group, most of these people in Poland are related.

The biggest group consists of people of German/Germanic origin living in Germany, Czech (Silar clan) and elsewhere. These are all that do not belong to the previous two groups.

Bukowsko Parish then included the villages of Bukowsko, Bełchówka, ( Belchowka ), Duszatyn, Jawornik, Kamienne, Karlików, ( Karlikow ), Komańcza, Kulaszne, Łubków, ( Lubkow ), Wolica, Wola Piotrowa, Wisłok, Bełchówka, Wisłok Wielki, Przybyszów, Płonna (Plonna), Rzepedź, Rzepedz, Radożyce ( Radozyce ), Szczawne, Smolnik, Solinka, Pryłuki ( Pryluki ), Czystohorb, Smolnik, Oslawica, Wysoczany, Tokarnia, Turzańsk, Wola Michowa, Wysoczny and Zboiska. 

Nowotaniec Parish then included the villages of Nowotaniec, Nagórzany, Nadolany and Pielnia.

Surnames : Aulich, Bak, Baran, Bartnik, Barycki, Bauchmann, Bauer, Becker, Bednarz, Belchoski, Bialobrzeski (nobilis), Bilas, Bilek, Biskup, Blaszko, Blazko, Bolton, Boberski, Bochnarz, Bochniak, Bończak, Borek, Borth, Bromowicz, Brozyna, Bryla, Bugel, Buryk, Buzyk, Cesarczyk, Choduchoski, Chrzaszcz, Chudzicki, Ciesla, Ciupa, Cwiakala, Cybulski, Czakański, Czapor, Czarkawski, Czekański, Czucz, Czytajło, Czytajlo, Dabrowski, Dalikowski, de Zurowski, Debicki, Debiec, Dozycki, Drozd, Dudus, Dymiński, Dziewiński, Felix Niezabitowski (nobilis), Filak, Flak, Fracek, Fracek, Fuger de Rathborn, Gackowski, Gackoski, Grim, Grundt, Grzegorz, Grzes, Grzyb, Grzyszka, Hachowicz, Hajduch, Handl, Hanulak, Hanulak, Hanus, Harasim, Haraszyn, Haszkiewicz, Hnat, Holowkiewicz, Holowski, Hojsak, Hromańczyk, Hryciow, Hujsak, Jajko, Jakiel, Jaklewicz, Jakub Wiktor (nobilis), Jadwisieńczak, Jadwisieńczak, Jakubaszek, Jakuboszek, Jaroszewski, Jasiczek, Jedrysik, Jedrzejczak, Jordan, Jurkiewicz, Kamyk, Karbowski, Karnicka, Katrusiak, Kawa, Kinelski, Kirchner, Kizling, Klebczyk, Kleczka, Klepa, Klepczyk, Klimek, Kohler, Koliba, Kołodzej, Kolodziej, Konaszewska, Konik, Kornell, Kowal, Kowal, Kowalik, Kozloski, Kozłowski, Krajewska (nobilis), Krawiec, Kreutzig, Kriak, Kruczyński, Kruczyński, Krulicki, Królicki, Krolicki, Krupski, Kseniak, Kubasiewicz, Kulczycki, Kutiak, Kwarciak, Kwasniak, Lada, Langer, Langner, Lenius, Lenk, Leszczyński (nobilis), Linda, Lipa, Luczyński, Luszcz, Maideski, Malarczyk, Malec, Maly, Mandel, Marzeński, Mazur, Mecinski (nobilis), Medardus, Mietka, Mikolajek, Milasz, Minicki, Modrzyński, Muszyński, Mycielski, Nawalany, Nendza, Niedzielski (nobilis), Niemiec, Niktowicz, Ogrodnik, Olejnyk, Pawlikowski, Pich, Piechowicz, Pieszczoch, Pietrzycki, Pilat, Pisiewicz, Pituch, Plesniarski, Podolak, Podwapiński, Polakowski, Porkolop, Perkołup, Postel, Prucnal, Pstrak, Raciborski, Radożycki, Radozycki, Rakoczy or Rakocy, Rańcio, Reck, Roczniak, Romanowski, Romański, Rychliński, Ryglewicz, Rymarowicz, Rzepa, Rzulicki, Sadowski, Sagan, Scherer, Schoen, Schotz, Sek, Seredyński, Sieraciak, Silarski, Sliwiński, Slusarczyk, Slyszyk, Słyszyk, Smialowski, Sobol, Sobolewski, Sokol, Solon, Sporn, Srogi, Stalecki, Stankowski, Stawarczyk, Stawarczyk, Stawarczyk, Sternyk, Strzelecki, Styrnik, Sternik, Suchodolski (nobilis), Swigost, Swoboda, Sypniewski, Szalina, Szaszoski, Szatkowski, Szczepanik, Szczerba, Szltysik, Szwanowski, Szymański, Szypula, Tarnawczyk, Truskolaski (nobilis), Truszkowski, Wdowiak, Wakerman, Wazykowski, Wegrzynowicz, Wieczorek, Wienniczenko, Wiklewicz, Wilczek, Wildycki, Wilhelm Pozniak (nobilis), Wilistocki (pedagogus), Wilusz, Wislocki, Wladyslaw Pozniak (nobilis), Woinarowski, Wowk, Zabiega, Zachara, Zadylak, Zajac, Zakrzewski, Zaszowski, Zatorska (nobilis), Zatwarnicki, Zmarz, Żołnierczyk, Żydka, Żyłka, Żytka, Żywka.