I don't think any of us knows for certain, but I'd be willing to bet that he is not, when you couple the fact that Bilbo is supposed to be much younger in The Hobbit then he is in The Lord of the Rings trilogy, with the fact that Sir Ian Holm is even older now than he was when he filmed Lord of the Rings.
Ian Holm's birth name is Cuthbert, Ian Holm.
Ian Holm
Ian Holm is 5'6" (1.68m)
Sir Ian Holm was born on September 12, 1931.
Sir Ian Holm was born on September 12, 1931.
Ian Holm played in the role of Bilbo Baggins .
Sir Ian Holm played Bilbo Baggins in the most recent film adaptation of The Lord of the Rings.Martin Freeman played Bilbo Baggins in 'The Hobbit' movies.
Ian Holm's filmography - see related link below .
Martin Freeman played the role of Bilbo Baggins in The Hobbit.
Ian Holm was born on September 12, 1931, in Goodmayes, Essex, England, UK.
Sir Ian Holm is 79 years old (birthdate: September 12, 1931).
Ian Holm.