Possible Clues:

• One making changes
• Not about the latter wanting for a change
• eg Luther
• One making alterations to one's character in Luther, for instance
• One undertaking progressive changes
• Restorer, he leaves here late
• One seeking political change -- once soldiers get precedence
• One was Luther King, always engaging for millions
• One who brings change for the better
• That's not about the latter do-gooder