Lucy is the daughter of Henry Mills, although they end up separated somehow and Lucy decides to find her father.
Years after the Final Battle of Storybrooke, Lucy arrives in Seattle, where she finds her father Henry's apartment. Although Henry denies having a daughter, Lucy implores him to come with her and save their family.
- Henry Mills (father)
- Cinderella Mills (mother)
- Peter Pan (deceased great-great-grandfather)
- Fiona (deceased great-great-grandmother)
- Cora Mills (deceased step great-great-great-grandmother/adoptive great-grandmother)
- Henry Mills Sr. (deceased step greatgreat--great-grandfather/adoptive great-grandfather)
- Xavier (step great-great-great-great-grandfather/adoptive great-great-grandfather)
- the Miller (step great-great-great-great-grandfather/adoptive great-great-grandfather)
- Regina Mills (step great-great-grandmother/adoptive grandmother)
- Emma Swan (paternal grandmother)
- Baelfire (deceased paternal grandfather)
- Killian Jones (paternal step-grandfather)
- Rumplestiltskin (paternal great-grandfather)
- Belle (step great-grandmother)
- Colette (deceased step great-great-grandmother)
- Maurice (step great-great-grandfather)
- Milah (deceased paternal great-grandmother)
- David Nolan (maternal great-grandfather)
- Snow White (maternal great-grandmother)
- Eva White (deceased great-great-grandmother)
- Leopold White (deceased great-great-grandfather)
- Ruth Nolan (deceased great-great-grandmother)
- Robert Nolan (deceased great-great-grandfather)
- James (deceased great-great-uncle)
- Neal Nolan (great-uncle)
- Robyn (step great-great-cousin/adoptive great-cousin)
- Gideon (great-uncle)
- Zelena Mills (step great-great-aunt/adoptive great-aunt)
- S6, E21: "The Final Battle, Part One"
- S6, E22: "The Final Battle, Part Two"