à ÂwiÃÂtopeà Âk I (also referred to as Swantopolk I; born , died before 1148) sometimes called "à ÂwiÃÂtopeà Âk of Nakà Âo" to distinguish him from other rulers of the same name, was one of the first known Dukes of Pomerania; in the years 1109/13 to 1121 he ruled over Pomerelia.
He is usually thought to have been the son of à ÂwiÃÂtobór I (Swantibor), although other historians make him a brother of à ÂwiÃÂtobór (as well as of a third Pomeranian duke, Dumar) and son of Siemomysà  I.
He is mentioned in the chronicle of Gallus Anonymus. The 16th-century Pomeranian chronicler Thomas Kantzow also states that à ÂwiÃÂtopeà Âk was one of the younger sons of Swietibor, who ruled Eastern Pomerania after his father was deposed. The Prussian historian Ludwig Giesebrecht, who gave approximate dates for the duke's birth and death, considered him the originator of the Pomeralian dynasty and stated that à ÂwiÃÂtopeà Âk and his father Swietibor were related to the Piast dynasty through marriage. Other historians have also hypothesized that à ÂwiÃÂtopeà Âk and Swietibor were related, by blood or by marriage, to the Polish Piast dynasty, or that they served as voyevodas for them in Gdaà Âsk (Danzig). However, Edward Rymar contests the thesis that à ÂwiÃÂtopeà Âk was Swantibor's son based on the fact that Gallus Anonymous would have surely mentioned that fact, but rather the chronicler described à ÂwiÃÂtopeà Âk as a "certain Pomeranian" who was granted control over Polish land by the Polish ruler.
Along with his father he was most likely expelled from Pomerania around 1106 by rivals. After Bolesà Âaw III Krzywousty defeated Pomeranian dukes at the Battle of Nakà Âo (whose forces, according to Gallus Anonymus numbered thirty thousand), he gave à ÂwiÃÂtopeà Âk Nakà Âo, and other grods (Slavic settlements) on the river Noteàas a fief.
After à ÂwiÃÂtopeà Âk tried to carry out foreign policy without approval of the Polish ruler in 1112, Krzywousty invaded his lands. After a three-month siege of Nakà Âo (according to Gallus, from September 29 until December 25), he forced à ÂwiÃÂtopeà Âk to submit. à ÂwiÃÂtopeà Âk had to pay a tribute to the Polish duke and gave his son (name unknown) as a hostage. In 1113, à ÂwiÃÂtopeà Âk once again rebelled against Polish rule and Bolesà Âaw once again invaded, taking Wyszogród and Nakà Âo.
Little is known of his later life. In 1119, Krzywousty defeated two unnamed Pomeranian dukes, taking one prisoner and banishing the other. It is possible that one of them was à ÂwiÃÂtopeà Âk.
According to later chronicles of Jan Dà Âugosz and Kantzow, in 1121, a Duke "Odrzanski" ("of the Oder") named à ÂwiÃÂtopeà Âk died. Some historians have interpreted this to have been the same Swietopolk, son of à ÂwiÃÂtobór. However, others consider the "Odrzanski" Swietopolk to have been a different person, Duke of the Chyà ¼ans (Kcynians), whose lands were invaded in 1121 by the Saxon prince Lothar of Supplinburg.
à ÂwiÃÂtopeà Âk had several sons, one of whom served as a hostage at the court of Bolesà Âaw Krzywousty. It is possible that this unnamed son was the father of Sobieslaw I, Duke of Pomerania, founder of the Samborides dynasty.