what happens if prince charles dies before becoming king
Answer by Gloriana. Confidence votes 1.5K. If Charles dies before Queen Elizabeth dies, then Prince William will be first in line. If Charles dies while he is king (having succeeded Elizabeth to the throne), then Wlliam becomes king and his eldest son (supposing there is one) will be heir to the throne.f Charles dies before Queen Elizabeth dies, then Prince William will be first in line.