A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Author: Leora Oldessroth
Arent is an Ogier; he is the son of Halan and the father of Loial (TEotW, Ch. 36). Arent is also an Ogier Elder; when he learns that Loial has a Talent for treesinging, he insists that Loial learn (TEotW, Ch. 42). Arent has met the Green Man and he talked about it often.
(Reference: The Eye of the World, Chapter 46)