Attempts to resolve the Quandary:
5
Upon viewing the security camera recording, the owners realized that the guy they had delegated the housekeeping to, had been unconsciously taking several noctivagant trips to the bathroom, and had, during the course of their two-month vacation, consumed most of the congeries in their medicine cabinet, including some shaving cream, massage oil, and the herbal nostrum they had believed cured sleep-walking, which it obviously did not. (by QuaQua)
4
The delegation from England to the Court of Phillip II was plagued by a combination of intestinal distress and sleeplessness that His Majesty’s court physician treated with a unique nostrum of his own design (that consisted of congeries of such diverse elements as herbs and desiccated offal and manures) that did produce the desired release, but only during unsavory noctivagations of the Royal Suites: it was to set a very dark tone to the relationship between Spain and England for quite some time. (by gumo420)
3
During his recurrent noctivagant perambulations our toddler was apparently given to reciting a tedious congeries of his daytime plaints, but whether he was a neurotic lygophiliac or merely a disturbed somnambulist we really couldn't say, for we had long ago delegated all responsibility for him to the live-in nanny while we savoured the nostrum of extended holidays abroad unencumbered by the mewling brat. (by Et Seqq)
2
As demand for her nostrum increased, the aging proprietrix of Ye Olde Cure Shoppe, who couldn't mix sufficient quantities from the congeries of powders and extracts on hand, delegated the task of ingredient gathering to a troop of noctivagant elves, who roamed field and forest in search of the essential moonflowers and vespertine beetles, while she, the proprietrix, waited back at the Shoppe with a power blender and thirty gallons of high fructose corn syrup. (by Rudi)
1
Nanny Alderson, having eyed her sleepwalking young charge worriedly for some minutes, delegated to the nursery maid the task of bringing fresh lavender and elderflower from the herb garden while she herself rummaged through the congeries of nostrums in her medicine chest for dried chamomile and lime blossoms, thinking to make a tisane and perhaps a small sleep pillow to help check Master Errol's noctivagant behavior. (by cusheamus)
6
Mom would delegate the night-watch to the last of us to turn in, and if it was you, you'd have to stay awake, listening for grandma to begin her noctivagant trip around the house, groping in the dark, dragging her feet on the floor, and disturbing dad's sleep, until you, the watchman, arrived with her misplaced bag of congeries: betel leaves, areca nuts, a few gold coins (grandpa's earnings), and the Tulsi-based nostrum she had prescribed herself 'for her forgetfulness.' (by QuaQua)