The Blue Ridge Mountains make up the northern and southern regions of the larger Appalachian Mountain range. The Appalachians are located in eastern North America. Blue Ridge does see a lot of sports action including skiing and snowboarding.
Olivia Foxworth's question is alluding to the fact that an incestuous couple bear a higher risk of producing children subject to birth defects such as autism or Down syndrome.
Boa constrictor snakes are in fact far from sweet. Chris is of course being Mr. Sarcastic. However, perhaps the grandmother's visage does resemble that of a boa constrictor. Also, the boa is known for its dexterous prey strategy - to suffocate by tight captivation and then squeeze its prey to death for breakfast. Similarly, the grandmother appears to be suffocating her grandchildren within the confines of a room where they find it hard to breathe.
As Chris promptly confirms, what hangs on the wall is the works of Spanish Romantic painter, Francisco Goya. The paintings described most probably include Saturn Devouring His Son and Courtyard With Lunatics by Goya.
Here, we are reminded of Cathy's tender age. She is painting a picture of chivalric romance. This literary genre was popular with the aristocracy and highly concerned with medievalism. Saint George and the Dragon and the legend of King Arthur are two very significant examples of Medieval romance.
Chris is delightfully smug about the fact that a male can urinate virtually anywhere and that too with greater ease than a female. This art he effectively coins 'picnic bathrooming'.
Chamberpots are no longer used in North America, or hardly anywhere. They were containers used as urinals until flush toilets began to replace them. The Dollengangar children had a water closet with a flush toilet at their disposal because the use of chamberpots had faded away by the mid-19th century.
A dormer is a structure usually protruding from the sloping roof of an attic. Windows are then set into these dormers. Grand homes such as Foxworth Hall often commonly display a horizontal strip of dormers.
A pitcher is akin to a jug - it is used to pour liquids. In fact, a pitcher is a jug. The Americans call it a pitcher and the British call it a jug. Yep.
These two uniforms represent the two sides that fought against each other - the Union and the Confederacy - in the American Civil War, 1861-1865. The latter comprised the Southern States, including Virginia, who declared secession from the USA while the former opposed the Union in support of the federal government.
The Civil War had turned into something of a naming game ever since it was waged in 1861. It was titled differently according to region and the various perceptions of it. Christopher indicates his preference to 'War Between the States' because this was the term used prevalently in the Southern States, mainly post-war. The Conferacy avoided calling it 'The Civil War'.