Obituaries for the restaurateur Ado Campeol (1928–2021) reported that it was invented at his restaurant Le Beccherie in Treviso on 24 December 1969 by his wife Alba di Pillo (1929–2021) and the pastry chef Roberto Linguanotto (1943–2024).[18][19][20] The dish was added to its menu in 1972.[21][22][23] According to Carminantonio Iannaccone, he created the tiramisu at his bakery, Le Beccherie, on 24 December 1969.[24]

I mean it does seem to imply that he did since you know... He was the pastry chef and this is a pastry. Though you know there is that other guy saying he did it first even though it's 3 v 1 and likely parallel creation would occur for something as simple as a deconstructed/reconstructed after dinner coffee dessert.