No, Vicksburg's fall had no bearing on the Emancipation Proclamation.
The Union did: Grant at Vicksburg, Meade at Gettysburg.
Vicksburg was the site of the siege, not a commander of the battle.
Ulysses S. Grant won the battle at Vicksburg making Lee surrender
Vicksburg
U.S. Grant
Most contemporary Americans ignored the fall of Vicksburg because it was overshadowed by the Battle of Gettysburg.
His first battle was won in Missouri at the battle of Vicksburg.
The North won.
Ulysses Grant.
The Union Army.
Vicksburg