The indexer has definitely identified the metatopic here. The next step is to break it down into useful chunks for the reader, identifying the topics and sorting them sensibly and helpfully. Indexing. Biographies (which this seems to be) have a common pattern, which is helpful: parents, birth, childhood, education, work, publications, controversies, rivals, schools of thought, and so on.
A few lines below, under Tonquédec, is an example of an undifferentiated locator. Imagine the reader paging through each of these locators, searching for some content. Also, having so many one-page locators gives the impression of a concordance or a search operation done in Word; no help to anyone.