When Jonathan Reed's wife, Mary, died in 1893, the widower didn't want to leave her side. In fact, he was so devoted he moved in to her tomb, where he lived (with a parrot) for over 10 years.
Reed had his Mary's casket transferred to the vault, where he installed an empty casket in which he would eventually lie. He then settled into what became his second home. Domestic furniture stood in the vestibule, a wood stove provided heat, and scattered about the vault were a clock, some urns filled with flowers, photographs, paintings on the wall, a deck of playing cards, Mary's half-finished knitting, and the family's pet parrot (first alive, later stuffed). As word of Reed's story spread, company began stopping by. Around 7,000 people stopped by in the first year alone.
Witnesses said he ate all of his meals there and held imaginary conversations with his wife. According to the New York Times article, published in March of 1905, "Mr. Reed could never be made to believe that his wife was really dead, his explanation of her condition being that the warmth had simply left her body and that if he kept the mausoleum warm she would continue to sleep peacefully in the costly metallic casket in which her remains were put." The article also states, "According to his friends, he really believed that his wife could understand what he was saying to her."
Reed died in 1905 and was finally interred with Mary — you can read his New York Times obituary here. Given that she was buried in the vault, their I Love Lucy sleeping arrangements allow this story to be bittersweet + weird (as opposed to weird + weird).