No. She was her sister-in-law.
It was George Ashley Wilkes.
Leslie Howard
Melanie Hamilton married her cousin Ashley Wilkes.
India is Ashley Wilkes sister
In "Gone with the Wind," Melanie Wilkes is Ashley Wilkes's first cousin. Their close familial relationship is highlighted throughout the story, as both belong to the same social circle in the South during the Civil War era. Melanie's loyalty to Ashley and her character's gentle nature contrast with other characters, particularly Scarlett O'Hara, who is also in love with Ashley.
Melanie Wilkes sings "Hark! The Herald Angels Sing" at Tara's melancholy Christmas in Gone with the Wind.
It was George Ashley Wilkes.
Leslie Howard
Melanie Hamilton married her cousin Ashley Wilkes.
India is Ashley Wilkes sister
In "Gone with the Wind," Melanie Wilkes is Ashley Wilkes's first cousin. Their close familial relationship is highlighted throughout the story, as both belong to the same social circle in the South during the Civil War era. Melanie's loyalty to Ashley and her character's gentle nature contrast with other characters, particularly Scarlett O'Hara, who is also in love with Ashley.
According to the IMDb website, the role of Beau Wilkes, son of Ashley and Melanie Wilkes, was played by Mickey Kuhn (in the scene where Melanie is dying) and Gary Carlson (uncredited - in the scene where Melanie is feeding the returning soldiers.)
Pittypat or "Aunt Pitty" is Melanie Wilkes and also Scarlett O'Haras' first husband Charles' aunt.
The four main characters are Scarlett O'Hara, Rhett Butler, Ashley Wilkes, and Melanie Hamilton.
Well, nine characters die, in all. Brent Tarleton, Stuart Tarleton, Raiford Calvert, Ellen O'Hara, Gerald O'Hara, Melanie Wilkes, Bonnie Butler, Frank Kennedy, and Charlie Hamilton.
Ashley Wilkes is going to marry Melanie Hamilton his cousin and that it will be announced at the Bar-b-q
Melanie Wilkes reads the book aloud to the ladies of the sewing circle while the men go to raid Shantytown.