Lorelai Victoria Gilmore is the only daughter of the wealthy Richard and Emily Gilmore.  Lorelai is the single mother of Lorelai "Rory" Leigh Gilmore after getting pregnant at 16 and refusing to marry Christopher Hayden, Rory's father.

Instead, Victoria choose to run away to the town of Stars Hollow where she ends up working at an Inn.  Eventually Loreali and Sookie buy a run-down old inn called the Dragonfly Inn.

Lorelai dates Luke Danes towards the end of the series, but breaks up with him and even briefly marries Christopher.  During the series finale it's presumed she gets back together with Luke.

Lorelai Gilmore Quotes

(about tea she had with Emily and Trix) Yeah well once you're done with those little sandwiches, there's not reason to pretend you like tea anymore.

Lorelai

Woman at the B&B: What happened at to the horse at the end?
Lorelai: It died.