Πεισίστρατος, (Pisistratus) the youngest son of Nestor and Anaxibia, was a friend of Telemachus, and accompanied him on his journey from Pylos to Menelaus at Sparta. (Hom. Od. 3.36, 48, 15.46, &c.; Hdt. 5.65 ; Apollod. 1.9.9; Paus. 4.1.3.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890