Explain the relationship between the Grangerfords and Shepherdsons (CH 17-19)

The Grangerford and Shepherdson families participate in a violent, tragic feud. In fact, the happenings reflect a modern day Romeo and Juliet theme, as a Grangerford daughter and Shepherdson son elope, causing a familial massacre. Ironically, the two lovers are the only ones that survive. Huck explains how civilized, wealthy and respected the Grangerford family is, but then shatters this image by detailing the feud's excessive and tragic killings. Here, Twain demonstrates the utter stupidity of even the most educated and respected families, who can destroy themselves through nonsensical behavior and excessive pride.