Sure, why not (3.0 version):
Gandalf, Male Human Pal8: Medium Humanoid ; HD 8d10+16(Paladin) ; hp 97; Init +2; Spd 30; AC 12(Flatfooted:10, Touch:12); Atk +9/4 base melee, +10/5 base ranged; +11/+6 (1d10+3, Glamdring); AL LG; SV Fort +11, Ref +7, Will +12; STR 12, DEX 14, CON 14, INT 16, WIS 20, CHA 16.
Skills: Alchemy +7, Bluff +5, Concentration +8, Diplomacy +11, Gather Information +5, Handle Animal +11, Heal +13, Intimidate +7, Listen +7, Ride +10, Spellcraft +6, Spot +7.
Feats: Alertness, Armor Proficiency: heavy, Armor Proficiency: light, Armor Proficiency: medium, Combat Casting, Iron Will, Shield Proficiency, Simple Weapon Proficiency, Exotic Weapon Proficiency: Sword, bastard.
Spells Prepared (Pal --/3/1): 1st - Bless Weapon, Endure Elements, Protection from Evil; 2nd - Remove Paralysis.
Possessions:
Weapons: Glamdring, +2 Sword, bastard: Bane: Orc, Narya, ring of fire (1/day: resist elements (fire), continual flame, pyrotechnics, flame arrow), Istari Staff (light, 5/day; shield of faith 3/day; lightning bolt 1/day)
Shadowfax: Horse, Light War: CR 1; Large Animal ; HD 7d8+21 ( Animal) ; hp 52; Init + 1; Spd 60; AC 16; Atk + 5 base melee, + 2 base ranged; +5/+0 ( 1d4+4, 2 Hooves; 1d3+2, Bite ); SQ: Scent (Ex); AL N; SV Fort + 9, Ref + 6, Will + 3; STR 18, DEX 13, CON 17, INT 7, WIS 13, CHA 6.
Skills: Listen +7, Spot +7.
(I didn't add the celestial template to Shadowfax)