http://www.eupedia.com/europe/Haplog...1a_Y-DNA.shtml

King Willem-Alexander of the Netherlands, belongs to haplogroup R1a-Z280
(north-western Slavic S18681 subclade) according to the testing of a distant
cousin with FTDNA. He is the son of Queen Beatrix of the Netherlands and
German diplomat Claus von Amsberg, whose family hails from Meklenburg.



Once I watched his intronisation, so now I know why I did it

Exemplary R1 couple

His pedigree is not too long, so not enaugh to say about his origin,
but because the oldest know ancestor was from exwielet land in
western Pomerania, and his surname placed him (probably) in old
slavic Serbia (today Saxony) and because of his haplotype, then
he is almost certainly of Slavic origin.

Place of origin in XVII century: https://en.wikipedia.org/wiki/Borrentin

The place in Germany from which could be deriverd his surname: https://de.wikipedia.org/wiki/Amtsberg

1. Jürgen Amtsberg +1684/6
2. Jurgen G. von Amsberg 1679-1756
3. Georg von Amsberg 1717-1772
4. Johann von Amsberg 1747-1820
5. Joachim von Amsberg 1777-1842
6. Gabriel von Amsberg 1822-1855
7. Wilhelm von Amsberg 1856-1929
8. Claus Felix von Amsberg 1890-1953
9. Claus Georg von Amsberg 1926-2002
10. Wilhelm Alexander von Amsberg *1967 king of Netherlands since 2013.