THE KING'S SON 

The Rurik (or Rurikid), were a "Russian" dynasty founded by the Varangian Prince Rurik, who established himself in Novgorod around the year AD 862. The Rurikids were the ruling dynasty of Kievan Rus' (after 882), as well as the successor principalities of Galicia-Volhynia (after 1199), Chernigov, Vladimir-Suzdal, and the Grand Duchy of Moscow, and the founders of the Tsardom of Russia. They ruled until 1610 and the Time of Troubles, following which they were succeeded by the Romanovs. They are one of Europe's oldest royal houses, with numerous existing cadet branches.

As a ruling dynasty, the Rurik dynasty held its own in some part of Russia for a total of twenty-one generations in male-line succession, from Rurik (died 879) to Vasili IV of Russia (died 1612), a period of more than 700 years.

The YDNA Haplogroup of the House of Rurikid has been determined to be N1C1. The following website on the Y haplogroup of the Rurikid provides the details of their analysis.

The full SNP listing of the Royal Rurikid Haplogroup is N-M231 > F1419> CTS6967 > L550 (aka N1C1) > Y4341 > Y10931 > VL15

Additionally, the Russian Nobility DNA Project at FTDNA managed to determine that the Lithuanian Gediminid dynasty, although not descended from the Rurik dynasty, also belongs to haplogroup N1c1. Specifically, their full SNP listing is N-M231 > F1419> CTS6967 > L550 (aka N1C1) >  L1025 > L551 > Y13977  > Y41444. This means the common ancestor between the Rurikid and Gediminid Houses was born in ~1200BC.

The House of Gediminas ruled as Grand Duke of Lithuania from ca. 1285 to 1440. An offshoot of Gediminids is the Jagiellonian dynasty who ruled as the Kings of Poland and Grand Dukes of Lithuania from 1386 to 1572, and also include two Kings of Bohemia, Hungary and Croatia between 1471 and 1526.

It is this ancient YDNA connection between the Lithuanian and Polish Kings that may have helped lead to the formation of the Polish-Lithuanian Commonwealth.