Yes often whole families of people get redirected to a biography of one member of that family - automatic assumption that all redirects to an article refer to the subject of the article is wrong. Alternate spellings of names used to be in the persondata template, and that has now been discontinued. I expect there will be some work to fix any lost alternate spellings, but at least the alternate spellings will be visible for other languages now, so it will be easy to reuse them for other languages if that is considered desirable on a case by case basis (for example, for some languages, only the last name was latinized)