Ian Holm was 71 in The Lord of the Rings: The Return of the King when he played the character 'Bilbo'.
That was over 20 years ago in 2003.
In 2020 he died aged 88, starring in 110 films in his career, 19 of those after The Lord of the Rings: The Return of the King was first released. If he were alive today he would be 91.
In The Lord of the Rings: The Return of the King, I think Ian Holm looks: