She featured in one of the Flashman books. And speaking of Flashman, King Tewodros II of Abyssinia, who was featured in Flashman on the March, is in the running.
From the site The Victorian Child (asterisk mine):
*****Albert died in December 1861.
“the working man’s children were “part of his productive power,” an indispensable source of family income”
Well Albert was correct. A working man’s children had been part of his productive power since the beginnings of agriculture. Almost every child in rural areas worked the fields, almost every child in urban areas did either menial tasks or learnt a trade. It just so happens that children were no longer remaining the “indespensable source of family income” at just *this *very point in English history. You can hardly blame the man if never saw this coming. I don’t expect Royalty to be ahead of their time in societal & economic predictions.
I don’t know if it would count for the purposes of the OP, but he mentions “mental instability” and “psychosis”… Even if only because of that (even though by most accounts he was a really passive fellow), I would like to nominate Charles II of Spain, the last Spanish Hapsburg king.
The poor guy did not have a family tree – he had a family tumbleweed. You can check it out here: File:Carlos segundo80.png - Wikipedia
The Hapsburgs did not want to marry away from “proper” royal families, and (of course) they had to be good Catholics… But with Spain being the enemy of France and other European Catholic nations, basically the only people considered suitable to marry were those of the Austrian Hapsburg branch.
The amount of inbreeding this caused was nothing short of phenomenal. Copy-paste from the relevant wikipedia article (emphasis mine):
“Charles’s own immediate pedigree was almost exclusively populated with close relative relationships: Charles’s mother, Mariana of Austria, herself a Habsburg, was a niece of his father, Philip. Mariana was a daughter of Empress Maria Anna of Spain (1606–46) and Emperor Ferdinand III. Thus Maria Anna was simultaneously his aunt and grandmother while Margaret of Austria, Maria Anna’s mother, was both his grandmother and great-grandmother.”
He died at the age of 39, the most amazingly genetically degenerated king in modern history. Mentally retarded, definitely psychotic (he spent hours sitting in the crypt of El Escorial where the previous kings of Spain were buried, and he had their coffins open so he could be “in their company”), and (of course) the country finished its long descent into absolute shit, because he was absolutely incapable of governing. His favorites went unchecked and had a free hand in plundering the country, and many others just took the chance to do the same, because there was no effective governance whatsoever.
Read about him and be astonished.
HaBsburg.
NOBODY expects the Spelling Polizei!
[NM]
OK, but “Hapsburg” is also an accepted alternative spelling 
Copy paste from the relevant wikipedia page:
“The House of Habsburg (/ˈhæps.bɜrɡ/; German pronunciation: [ˈhaːps.bʊʁk]), also called House of Hapsburg,[1] or House of Austria,[2]<…>”
Although I must say that I don’t get how come I used the alternative spelling, given that in Spanish (my mother tongue) the name for the royal family in question is “Habsburgo” 
Nm. You corrected yourself.
Good. Don’t let us catch you again!
Vlad III is actually much respected by Romanians who consider him a stern, but heroic figure. There is some evidence that the serfs of his day liked him also because though his laws and their implementation was often harsh and cruel (standard in the life for a peasant serf) he applied them to the nobility as well.
He gave the peasants a stake in their country, eh?
Perhaps he polled the electorate.
In this place? They have their own key, and a bunk. We expect them to feed the cat, but they slack off on that sometimes.
That’s not true. Children were put to work as soon as possible. Even if it was something as simple as separating beans or minding younger children.
I posted about the industrial revolution in particular, where children as young as five and under had to run between chopping blades and steam-powered looms, risking life and limb in filthy conditions 12 hours a day without pay, or children as young as three on hands and knees hauling coal trucks through shallow mine tunnels in pitch darkness and be beaten for their troubles, not separating a hill of beans in mummy’s kitchen.
Mostly, it was that the peasants knew whomever was in power was going to punish them harshly, but when Vlad III applied some of the same laws and punishments to the wealthy nobility and elite clergy, well, that was different and in a sort of twisted way of keeping one’s sanity under oppression, felt good.
They were loyal through and through.
Sadly, child mining has been going on since before the bronze age.
Surprised nobody mentioned Zhang Xianzhong.
Or Ausburgo or Asburgo or Hasburgo or… I remember that the spellings in my 8th grade history book and those my brothers were supposed to buy were all different (in theory we should have used three different editions).