Damn, the OP’s last paragraph took the wind out of my snappy response. Oh well, I’ll say it anyway.
In The Lord of the Rings movies, Liv Tyler played Arwen who was 2,777 years old at the time.
Cate Blanchett played her grandmother Galadriel who was considerably older, but as far as I know her exact birth date in the First Age isn’t explicitly stated anywhere by Tolkien.
Gandalf is much older still, having existed before the creation of the world.
I agree that these types of things aren’t very interesting compared to human characters.
ETA: whoops, missed that What Exit? has already mentioned these.
Interestingly, actual pictures of Prince Philip from that time show he didn’t look particularly old or middle aged.
Alex Guinness was 48 when he played the at the time 30 year old Prince Faisal in Lawrence of Arabia.
Rose McIver was 23 playing a 13 year old in The Lovely Bones.
Gwen Stafani was in her mid 30’s when shooting the Aviator playing the 19 year old Jean Harlow.
Bea Arthur is actually a year younger than Estelle Getty, who played daughter and mother respectively on “Golden Girls.” Getty was born in 1923, but her character Sophia was about 18 years older, born around 1905.
Good example.
Madeline Petsch (Cheryl) is 25
Lili Reinhart (Betty) is 23
Camila Mendes (Veronica) is 25
Vanessa Morgan (Toni) is 27
Charles Melton (Reggie) is 28.
The actor who plays Moose is nearly 30.
What about the other way? Albert Finney played Scrooge at the age of 33. Not really sure how old Scrooge was supposed to be but I’d guess at least in his 60s or so.
The biggest legitimate one I can think of that doesn’t involve fantasy or the same actor playing a character through a lifetime is in The Man Who Shot Liberty Valance where Oz Whitehead, who was 50 at the time of filming, plays a character who was literally suppose to be in his early teens (he’s chided at one point for playing hooky from school to go fishing). As you can expect this casting doesn’t work at all, for the longest time I thought he was suppose to be mentally disabled because he was acting so oddly for a full grown man.
So a 36 year age difference between actor and character.
The disparity wasn’t nearly as much as other examples cited here. Lolita was 12 and a half in the book; her age is kept vague in the movie. Lyons was 14 when filming started, but was chosen because she looked relatively mature for her age.
Walter Matthau was 55 when he made The Sunshine Boys, playing a character who was supposed to be in his 70s or 80s. That may not be much, but he was playing opposite George Burns who actually was in his 80s at the time, and they looked well matched.
In the sitcom Eight is EnoughBetty Buckley who played the stepmom was several months younger than Laurie Walters who played the third eldest sibling( and Walters was also several years older than even the next closest actor playing a sibling).