It has little to do with the name on the ID card. As long as the signature on the will is signed by yourself, even if it is written by someone else, it is true as long as it is true. Some people have Zhang Junbao on their ID cards, but they have always written Zhang Junbao in their lives. It doesn't matter, as long as they can prove that they wrote it themselves. A name is just a symbol, nothing more.