Correct answers to the Royal Genealogical-Etymological East and West Slavic Summer Quiz:
1. Which European monarchy is currently the only one in line to get a future sovereign consort speaking Russian?
Luxembourg. Hereditary Grand Duchess Stéphanie spent a year studying art and literature in Moscow and speaks Russian.
2. Which Slavic-speaking kingdom did a dynasty originating in this country also rule?
The medieval Counts of Luxembourg inherited the Kingdom of Bohemia. The most famous of the Czech Lucemburkové was Emperor Karel IV.
3. Which Western European dynasty had at one time subjects that spoke both Germanic, Celtic, Romance and Slavic languages?[/b]
The Hanoverians. Their subjects spoke:
Germanic: English, German, Scots, Dutch (in New York State), Norn on Shetland and the Orkneys and some Frisian (Helgoland from 1807).
Celtic: Irish and Scottish Gaelic, Manx, Welsh and Cornish.
Romance: French (on the Channel Isles and in Québec).
Slavic: Polabian in the Hanoverian Wendland, untill it died out in the 1750s, approximately at the same time as Cornish.
4. Which German dynasty employed Slavic nursemaids for religious reasons?[/b]
The Albertine Wettins in Saxony, as the (Upper) Sorbs were the only native Catholics in the Kingdom of Saxony.
5. Which modern German dynasty is the only one with agnatic Slavic origin?
6. Which current European princess with certain East Slavic connections has a maiden name and title that is derived from the Slavic word for "fish"?
Princess Michael of Kent, née Marie-Christine Freiin von Reibnitz. Reibnitz / Rybnica is derived from Slavic ryba, fish.
9. Which German dynastic residence has a Slavic name meaning "here be wild animals"?
Schwerin, grand-ducal mecklenburgian residence, is derived from Slavic zver, (wild) animal (Russian зверь, beast).
7. Which current princess in a non-reigning house has a comital grandmother whose name and title means "fatty"?
Princess Sophie of Prussia, married to the Prussian pretender, née Princess of Isenburg, is the granddaughter of Countess Irina Tolstoya. Tolstoy means fat, thick, stout in Russian.
8. Which current, reigning European queen is related to the outgoing president of a Slavic country?
Queen Mathilde of the Belgians is the 6th cousin once removed of (Count) Bronisław Komorowski, untill three days ago President of Poland.
Where did that one go?
10. Which former imperial residence has a Slavic name meaning "swamp"?
Berlin is derived from Proto-Slavic brl, swamp (Silesian Polish: barzoł).
So 2 points to Janet :-)