Tinna Marina O'Connell (born January 31st, 2034 in Akranes, Iceland) is one of the adoptive daughters of Gemma and Darren O'Connell and the fraternal nonuplet sister of Helgi, Jón, Glyfi, Tóta, Óttar, Viggó, Alexandra and Anna Katrín.
She has blonde hair, blue eyes and pale skin.
- Father: Darren O'Connell (1989-)
- Mother: Gemma O'Connell (née: Kavanagh) (1997-)
- Brothers: Óttar O'Connell (2034-), Viggó O'Connell (2034-), Helgi O'Connell (2034-), Jón O'Connell (2034-), Glyfi O'Connell (2034-)
- Sisters: Alexandra O'Connell (2034-), Anna Katrín O'Connell (2034-), Tóta O'Connell (2034-)
- Aunts: Mimi Law-Kavanagh (1996-), Veronica John-Kavanagh ( -), Vivica Rice-O'Connell ( -)
- Uncles: Frank Kavanagh (1998-), Hoyt Kavanagh (1999-), Lou O'Connell (1990-), Ellis O'Connell (1991-)
- Cousins: Mickey Kavanagh (2030-)
- Grandmothers: Yvonne O'Connell (née: Swift) ( -), Susan Kavanagh (née: Buckley) (1963-)
- Grandfathers: Jim O'Connell ( -), Stephen Kavanagh (1961-)
- Her full name is Tinna Marina O'Connell
- For Halloween 2035, she is dressed as Viperine Gorgon
- Her favorite movie is Gordy
- her favorite snack is Gushers
- Her favorite toy is her baby Annabell doll