No they aren't related.
Leona Lewis
The Song Bleeding Love is by Leona Lewis.
They both have different songs with the same title.
OK LOOK CHRIS BROWN CHEATED ON RIHANNA BY A TXT OF SOME GIRL (Leona Lewis Or Paris Hilton ) AND THATS WHEN IT GOT PHYSICAL
According to IMDB Leon Lewis' middle name is Louise.
Leona Lewis
The Song Bleeding Love is by Leona Lewis.
Leona Lewis has a middle name of Louise.(source is in Related Links)
They both have different songs with the same title.
See the related link.
Neither.
There is no relation.
OK LOOK CHRIS BROWN CHEATED ON RIHANNA BY A TXT OF SOME GIRL (Leona Lewis Or Paris Hilton ) AND THATS WHEN IT GOT PHYSICAL
Leona Lewis's full name is Leona Louise Lewis.
Leona Lewis's birth name is Leona Louise Lewis.
Leona Lewis's full name is Leona Louise Lewis.
According to IMDB Leon Lewis' middle name is Louise.