Not true. Look up the definition of pseudepigrapha. ;) My point for the Gospel is that while you may be "technically" correct, EVERYONE is errantly told (a lie) that the gospels were written by the apostle whose name they bear. That is why most scholars would call them pseudepigrapha ... but, your point is well taken, especially for Hebrews. Most scholars would just admit that Paul was the author and had reasons for not putting his name to the book.