Julian Lennon says he's been snubbed by the remaining former Beatles and their families.
But he swore he and mom Cynthia, 72, would "not be eradicated from history."
The son of and his first wife Cynthia, says he's been left out of weddings and other events in recent months.
Julian, 48, said didn't invite him to either of his wedding receptions in London and New York.
Lennon made the claims in a posting on his personal Facebook page on Oct. 23, the day after Sir Paul, 69, and new bride Nancy Shevell, 51, held their wedding reception in New York.
Julian, who was 5 when his parents divorced - wrote:
'Wow... Snubbed at Macca's Wedding, Snubbed at the Anniversary of 'LOVE' in Vegas! Snubbed at Macca's Wedding reception in NYC, last night.
'Snubbed at George (Harrison's)'s Film Premier... What Have I done to be ignored in such a way?'
He went on: 'I was not invited to ANY of these events... I thought we had a relationship... Obviously not... Gimme some truth... Maybe now it's time to tell the Truth... I & My Mother will not be eradicated from History... How Dare They.'
As well as Paul's two wedding shindigs, Lennon - a musician - was referring to the premiere of the film, "George Harrison: Living In The Material World," in London on Oct. 2 and the five-year anniversary performance of the Beatles musical Love in Las Vegas on June 8.
Julian's half-brother Sean, 36, Lennon's son with Yoko Ono, 78 - did attend both Paul's New York reception and the Love anniversary, London's Daily Mail notes.Last Updated: 11/03/11 07:46