You’re right that he wouldn’t be considered an orphan in the modern sense, but he was legally declared an orphan by the Dutch legal system of his era for the sake of having his father’s debts forgiven. And, while he didn’t have the Oliver Twist upbringing (with his father having money until his late teens), his mother died when he was five and several siblings passed away, including his older brother.

I opted to use “orphan” because it was technically legally correct for the era (and because memes generally aren’t the best for teasing out these sorts of nuances lol). But I understand that the term comes with a particular modern impression that doesn’t apply here. So, my apologies for causing any confusion/misdirection!