Poll Suggestion: Brother and Sister Duos of TV

Will and Penny Robinson from Lost in Space (the 1960's original, not the lame remake)

Nick and Audra Barkley from The Big Valley

Keith and Laurie Partridge from The Partridge Family

Mike and Carol Seaver from Growing Pains

Alex and Mallory Keaton from Family Ties

https://www.imdb.com/title/tt0944947/mediaviewer/rm1517238016/?ref_=ttmi_mi_5_3

FYC:

Sookie and Jason 

https://www.imdb.com/title/tt0844441/mediaviewer/rm3599221504/

Lindsay and Sam 

https://www.imdb.com/title/tt0193676/mediaviewer/rm3988905216/

Brandon and Brenda

https://www.imdb.com/title/tt0098749/mediaviewer/rm1918972160/

Max and Isabel

https://www.imdb.com/title/tt0201391/mediaviewer/rm850248448/

Ben and Michaela

https://www.imdb.com/title/tt8421350/mediaviewer/rm784230656/

How about Sheldon and Missy from Young Sheldon?

https://www.imdb.com/title/tt6226232/mediaviewer/rm1544832257/?ref_=ext_shr_lnk