The bond of manrent was commonly an instrument in which a weaker man or clan pledged to serve, in return for protection, a stronger lord or clan—in effect becoming a vassal that renders service to a superior, often made in the form of a covenant.
However, their ranks were separately marshaled, and led by their own subordinate chiefs, chieftains, lairds or captains, who owed submission only when necessary, for the success of combined operations.
Although manrents often used terms such as, "our successors", "perpetually", and "in all time coming", their object was usually defense, aggression, or revenge, rarely extending further than the occasion for which they were formed.
[3] Manrents protected smaller clans from being swallowed up by larger ones, and nursed the turbulent and warlike spirit that formed the common distinction of all.
[2] The circumstances that led to manrents show that the Scottish government of the time was too weak to protect the oppressed or quell disputes between clans.
And sicklike I shall not hide, obscure, nor conceal, by any colour or engine, directly or indirectly, any skaith, displeasure, nor harm, meant or concert, in contrar the said Lachlan Mackintosh and his foresaids by any whatsomever person or persons, the same coming to the knowledge and ears of me, the said William Macleod and my heirs, but immediately after trial thereof in all our best manner, with all expedition and haste, shall advertise, report, and make foreseen the said Lachlan Mackintosh and his heirs thereof.