Older and newer systems for rendering Chinese names in Roman letters can give the same person several spellings. Changes in English pronunciation and in the understanding of Chinese linguistics complicate comparisons between reference works. Wikipedia can help with a quick check of alternative names, although some people discussed in older histories have no page. When a modern equivalent cannot be established confidently, keeping the spelling attached to the historical account helps avoid confusing different people.
Notable Point · 1:47-5:44
Reading Yamen across changing Chinese name systems
Different romanization systems can give the same Chinese people and dynasties several spellings in English-language histories.