God forgives all who believe upon his Son & ask for forgiveness for their sins.
I don't think everyone agrees that deathbed conversions can wash away all sins, no matter how horrid. I will find out someday. As I said, Lee's maker may have forgiven him, I don't profess to know, as you do. Lee had good character on most of his life's conduct, but his poor judgment in the Civil War contributed to 500,000 deaths and sought to perpetuate slavery, which the Christian church declared wrong within decades of Jesus' death, in the writings of St. Paul. He certainly had something to seek forgiveness for.