At writing down the credits, I've seen it's more a sorting, than needing a thread for the common name, but I still wanted to share it with you.

Btw, for the Linda Perrys, it seems we need a birth year. (Even if the Song writer credits could be wrong)

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Actress (?–1996)
http://www.imdb.com/name/nm0674642/
http://www.hollywood.com/celebrity/1472143/Linda_Perri_Credits

Linda Perri (4 confirmed) -> Common name
Cape Fear
Casino
My Girl
Deconstructing Harry

Linda Perry (1 confirmed)
Edward Scissorhands

0 credits remaining
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Songwriter, Herslef (1965)
http://www.imdb.com/name/nm1019616/
http://www.lindaperry.net/
http://en.wikipedia.org/wiki/Linda_Perry

Linda Perry (3 movies in database)
Mean Girls
Confessions of a Teenage Drama Queen
Roger Daltrey - A Celebration

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Actress
http://www.imdb.com/name/nm1005289/

Linda Perry (1 movie in database)
Fatty Drives the Bus

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Actress (1912–2001)
http://www.imdb.com/name/nm0675166/
http://www.cefapa.com/linda-perry-i.php

Linda Perry (0 confirmed, 3 unconfirmed)
The Great Garrick
The Mad Miss Manton
They Won't Forget

Linda Terry (0 confirmed, 1 unconfirmed)
The Mad Miss Manton

3 credits remaining

I know you said it's more a sorting thread than anything, but thought I'd share anyway:

Casino: Linda Perri
Cape Fear: Linda Perri

My Girl = Linda Perri as Betty

They Won't Forget@1:34:29
Imogene Mayfield ... LINDA PERRY