There are many left-handers well known by society and culture. Here is an incomplete list of Famous left handers. There is a picture of the person mentioned using their left hand, to prove otherwise that they are truly left-handed or prefer their left hand for writing. Below that image is their signature, and their name (and/or title).
This is a list of notable musicians who are either write left-handed, or play their instrument left-handed.
Left-handed are more inclined to artistic professions, to give an instance, lefties are about 10% to 15% of the general public, while among entertainers they are roughly 50%. 
(Note: Kurt Cobain and Jimi Hendrix both played guitar left-handed, but they mostly wrote with their right hands. They were naturally left-handers, but they were forced to write with their right hands. See talk page.)
[Vice-versa, lefties who play right-handed include Duane Allman (Allman Brothers), Barry Gibb (Bee Gees), Mark Knopfler (Dire Straits), and Paul Simon (Simon & Garfunkel).]
Interesting fact: in Lord Of The Lost 3 out of 5 members are left-handed. However they all play their instruments right-handed. Also their former drummer Tobias Mertens is left handed too. That makes their bassist Claas Gredayne as the only right-handed member of the band from 2016 till 2017.
Ringo Starr (born lefty, forced to write right-handed)