The Ottoman Law That Let Sultans Execute Their Own Brothers

When Sultan Mehmed III ascended the Ottoman throne in January 1595, one of his first acts as ruler was to have nineteen of his brothers and half-brothers strangled with silk bowstrings, all on a single night, all with the backing of established Ottoman law. It remains one of the most startling single episodes in the history of royal succession anywhere, and it was not, by the standards of its own time and place, an aberration. It was the law working exactly as intended.

The empire and the stakes

By the mid-15th century, the Ottoman Empire had grown from a small Anatolian principality into a major Mediterranean and European power, but it had inherited a persistent structural weakness: its succession system did not follow strict primogeniture, the eldest-son-inherits rule common in much of contemporary Christian Europe. Instead, in principle, any surviving son of a reigning sultan carried a legitimate claim to the throne, since Ottoman practice held that sovereignty belonged to the dynasty as a whole rather than to a fixed line of individual inheritance.

This created a real and repeatedly demonstrated danger. Earlier in Ottoman history, succession disputes among rival sons had triggered prolonged and destructive civil wars, most severely the Ottoman Interregnum of the early 15th century, when the sons of Sultan Bayezid I fought each other for over a decade following their father's defeat and capture by Timur, fracturing the young empire and nearly destroying it before it had fully consolidated.

The law

It was against this backdrop that Sultan Mehmed II, the conqueror of Constantinople in 1453, is widely credited with codifying a provision permitting a new sultan to execute his brothers upon taking the throne. The relevant clause, part of a broader legal code known as the Kanunname-i Al-i Osman, is generally rendered along the lines of: whichever of my sons inherits the sultanate, it is appropriate for him to kill his brothers for the sake of the order of the world, with jurists of the era asked to sanction the practice on the reasoning that avoiding a wider civil war justified a contained, deliberate act.

Historians continue to debate exactly how the surviving text should be interpreted and how directly Mehmed II himself ordered the practice versus later sultans and their advisors invoking his authority to justify their own actions. What is well documented is that the practice was carried out, repeatedly, by his successors, and was broadly accepted, if not always celebrated, within Ottoman political and religious institutions of the period as a grim but rational solution to a genuine structural problem.

The players

The law placed a particular weight on the mother of a sultan's sons. Because succession was not fixed by birth order alone, the political standing, ambition, and household resources of a prince's mother, often a woman who had entered the harem as a slave concubine before rising through the ranks of the imperial household, could meaningfully affect a son's prospects and his mother's own fate should he lose. A prince whose brother took the throne instead faced execution regardless of his own conduct or ambitions; the danger lay simply in existing as a plausible alternative claimant, a fact that shaped the deeply cautious, often outright isolated, upbringing of many Ottoman princes.

The scandal, step by step

Fratricide upon accession became a recurring, if variably applied, feature of Ottoman succession from the late 15th century onward. Sultan Selim I, who took the throne in 1512, had brothers and nephews executed to consolidate his position amid ongoing succession rivalry with his own father and siblings. Suleiman the Magnificent's reign in the 16th century saw internal court intrigue, including the execution of his own son Mustafa on suspicion of plotting rebellion, though this was a case of a father executing a son rather than the fratricide law's typical brother-on-brother pattern, illustrating how succession anxiety extended well beyond the formal accession moment itself.

The practice reached its most extreme documented instance under Mehmed III in 1595. Upon his accession, all nineteen of his surviving brothers and half-brothers, several of them still young children, were strangled in a single coordinated action inside the palace, using bowstrings rather than bladed weapons, reportedly to avoid shedding royal blood directly, a distinction Ottoman custom treated as religiously and symbolically significant. Contemporary accounts describe the event as producing genuine public unease even by the standards of an empire accustomed to the practice, with a mass funeral procession for the executed princes drawing what chroniclers described as widespread mourning in Constantinople.

The gossip versus the record

Popular retellings over the centuries, particularly in later European accounts written by observers hostile to or unfamiliar with Ottoman court structure, sometimes framed the practice as evidence of uniquely Ottoman barbarism or Islamic despotism, a characterization modern historians generally reject as both ethnocentric and historically shallow. The documented reality is that succession violence, formal or informal, was hardly unique to the Ottomans; contemporary and earlier European dynasties, from the Wars of the Roses to numerous Byzantine and other successions, produced comparable or worse bloodshed through informal civil war rather than a codified, contained legal process. What distinguished the Ottoman approach was precisely that it was formalized, deliberate, and framed explicitly as a lesser evil chosen to prevent a greater one, rather than the product of ungoverned chaos.

The fallout and its end

The scale of the 1595 executions, and growing unease among religious and political elites about the practice, contributed to its gradual abandonment over the following decades. Sultan Ahmed I, who took the throne in 1603, broke with the tradition by not executing his surviving brother Mustafa, instead confining him within a secluded section of the palace under guard, a system that came to be known as the kafes, or cage. Over the following generations, this system of confinement rather than execution became the dominant approach to managing potential rival claimants, though it carried its own well-documented costs: princes raised for years or decades in isolation, with limited education in statecraft, sometimes emerged to rule after long confinement in states of genuine psychological distress, a pattern historians point to when explaining the erratic reigns of some later 17th-century sultans.

The formal fratricide law was never dramatically repealed so much as it fell out of practice, superseded by the kafes system and by a broader shift in Ottoman succession customs toward seniority-based inheritance among the dynasty's surviving male line. What remains, in the documented legal and chronicle record, is a rare case of a major dynasty writing the unthinkable into explicit law, reasoning through its logic in the driest bureaucratic language, and then, over roughly a century and a half, living out the full and often horrifying consequences of that reasoning before ultimately abandoning it for something almost as grim, but no longer fatal.

The moral debate at the time

Ottoman religious scholars did not universally endorse the practice even in its heyday, and the historical record includes documented unease from jurists asked to weigh in on individual cases, particularly as the scale of executions grew. Some accounts describe scholars issuing rulings that attempted to narrow the circumstances under which fratricide was religiously permissible, arguing it should apply only where a genuine and demonstrable threat of rebellion existed, rather than as an automatic formality upon any accession. That the practice nonetheless continued in something close to automatic form for over a century suggests political necessity, as understood by the sultans and their inner councils, generally outweighed these narrower legal objections.

Why it endures as a subject

The law remains one of the starkest documented examples anywhere in world history of a ruling dynasty converting a recurring political problem, violent succession disputes, into an explicit, premeditated legal solution rather than leaving it to ad hoc court intrigue. It sits uneasily alongside the empire's simultaneous reputation, in the same centuries, for sophisticated administration, religious tolerance toward many of its non-Muslim subjects, and remarkable architectural and artistic achievement. Modern historians generally treat the fratricide law not as evidence of exceptional cruelty relative to other early modern dynasties, but as an unusually candid, bureaucratized version of a dilemma most royal houses of the period solved through less formal, though often no less bloody, means.