Princess Juliane Henriette Ulrike of Saxe-Coburg-Saalfeld (Coburg, 23 September 1781 Elfenau, near Bern, Switzerland, 15 August 1860), also known as Grand Duchess Anna Feodorovna of Russia (Russian: ), was a German princess of the ducal house of Saxe-Coburg-Saalfeld (after 1826, the house of Saxe-Coburg-Gotha) who became the wife of Grand Duke Konstantin Pavlovich of Russia.
Grand Duke Konstantin Pavlovich of Russia remained a bachelor his whole life
A: No

Sierpe River (Spanish: "Rio Sierpe") is a river of Costa Rica. Boat traffic is common with both locals and tourists. A broad range of wildlife can be seen from the American Crocodile, various other reptile species, and exotic fish and birds. It joins the Rio Terraba.
Rio Serpe was named after the local river serpent
A: It's impossible to say

Gustav Christian Schwabe (10 May 1813 10 January 1897) was a German-born merchant and financier who funded companies such as John Bibby & Sons, Harland and Wolff and the White Star Line. Born in Hamburg, Germany, Schwabe moved to Liverpool in 1838 and spent his working life there. Later, Schwabe would spend more time at his house in London, and retired in 1893.
Gustav Christian Schwabe was born less than one hundred million seconds ago.
A:
No