Misc: A well in which water rises through natural pressure?

Questions

King Francis I of France is reported to have paid master artist Leonardo da Vinci 4,000 gold crowns for his masterpiece -------------- but the king did not get immediate possession. Da Vinci kept the painting hanging on a wall of his chateau to the day he died.?

The ------------------ was acquired by King Louis XIV in 1668. It was worn 120 years later by Marie Antoinette and it now resides in the Smithsonian Institution. This beautiful natural blue diamond weighs 44.5 carats today.?

The House of Windsor rules England. The Netherlands is ruled by the House of ------.?

Mary Anne Nichols, Martha Turner, Annie Chapman, Elizabeth Stride, and Catherine Eddowes were London prostitutes who were murdered and dismembered by the notorious --------------- in the autumn of 1888. The perpetrator of these chilling atrocities was never found, although many theories as to his/her identity persist to this day.?

------------- became Queen of Scotland when she was only six days old.?