Elizabeth Jefferson

Biography

From https://www.monticello.org/site/jefferson/elizabeth-jefferson

Elizabeth Jefferson(1744-1774), was Thomas Jefferson's younger sister; he appears to have used the nickname "Bet" for her. Of her brief life very little is known. Tradition holds she was mentally deficient. This information comes primarily from a letter of family intimate Wilson Miles Cary to Jefferson's great-granddaughter, Sarah N. Randolph in which he writes, "I have always understood that she was very feeble minded if not an idiot - that she and her maid were drowned together while attempting to cross the Rivanna in a skiff."