The Wolfrider's Guide may have some questionable points, too - but it's edited by Richard Pini, so I'll trust it as long as there is no proof positive against a statement.
According to the Wolfrider's Guide:
Samael = Samael (no translation, father Greywolf) - name listed, relationship not mentioned
Vries = Frost (no translation, mother of Greywolf)- name listed, relationship not mentioned
Maanzilver = Moonsilver (partner of Two-Spear, mother of Sharptongue) - NOT mentioned
Scherptong = Sharptongue (no translation, son of Two-Spear&Moonsilver) - NOT mentioned
Droomzanger = Dreamsinger (Skyfire's Recognized. Strange elf (non-Wolfrider), got murdered by Stonethrower.) - CHECK
Nachtster = Nightstar (no translation given, daughter of Skyfire and Dreamsinger, sister of Freefoot) - CHECK
Tweeschauwen = Two-shadows (Freefoot's Recognized)
Havikvanger = Hawk catcher (son of Freefoot)
Veder = Feather (son of Freefoot)
Verscheurder = Fangslayer (son of Freefoot)
QUOTE: Freefoot's cubs were Feather, Long Oak and Fangslayer; it's also conjectured that he fathered a son, Hawkcatcher, with Two Shadows (a Goatrider) - take it to your liking, Zinegirl
... I just imagine Adar's face being called this by Timmain ...