After his death in battle at Nancy, Charles the Bold was found in a stream. He had been stripped of his armor, cloths, and jewels, and partially eaten by animals. His face was horribly mutilated and barely recognizable. His personal physician was chiefly able to identify him due to his hair color, long fingernails, and old battle scars.
Cursory googling suggests that while nail clippers are a fairly recent invention, nail trimming was nothing new.
Why did Charles the Bold carry such long fingernails that his stood out among those of his contemporaries?
To clarify the question, the latter link explains that since Antiquity is was common for nobility to exhibit long nails as a sign that they weren't working. My question is really about why his were so long that he stood out. Was it merely that he was one of the richest nobles in Europe at the time and made a point to have the longest (practical) fingernails around, or was there something else to it?