This unnamed young woman is the niece of Ellen Harvelle and William "Bill" Harvelle, she is also the older cousin of Jo Harvelle and a worker at the Harvelle's Roadhouse.
During the early 1980s, she looked after Sam and Dean Winchester when John Winchester left to find the supposed Heeler with Hunter and Ichi.
History[]
When John, Sam, Dean and Hunter visited the Roadhouse in November of 1983, John and Hunter spoke with Ichi regarding a case the latter had discovered that involved a Heeler. When John and Hunter agreed to help, John refused to allow his sons to go with them though Ellen insisted Sam and Dean would be welcome to stay at the Roadhouse and that her niece could look after the two.
Before the three hunters left, Ellen's niece entertained the infant Sam by juggling while Bill kept Dean company on the pool table.
On the 7th of April 1985, she became the cousin of Jo when Ellen gave birth to her daughter.