Well, Cameron Bright does have blackish brown hair. And yes, he is playing her twin brother in the movie.
No, the actor you are referring to is likely Cameron Bright who played Alec in the Twilight film series, not Jane's twin. Jane was portrayed by Dakota Fanning in the movies.
Dominic Janes's birth name is Dominic Roque Janes Centorbi.
David Janes died in 1987.
Alberto Janes died in 1971.
Alberto Janes was born in 1909.
David Janes was born in 1944.
Janes Aviation was created in 2006.
Paul Janes was born in 1912.
Jamey Janes is 167 cm.
Richard Janes is 6' 0".
Scott Janes is 6' 2".
Dominic Janes is 5' 11".
Paul Janes died in 1987.