Nicostratus is a mythological figure, a son of Helen of Troy and Menelaos (according to the Catalogue of Women, Laurentian Scholiast on Sophocles' Electra (539), and according to Apollodorus' Bibliotheca, 3.11.1) Although not an important figure in most accounts of the Trojan War, he is the central character in The Luck of Troy, a modern version of the story by Roger Lancelyn Green.
Nicostratus is also a son of Menelaos and a slave woman (according to Pausanias' Description of Greece, 2.18.6)
References
Nicostratus (mythology) Wikipedia(Text) CC BY-SA