I think I have been butchering some names as well, but I think the worst offense if people buthering Simone's name-I asked his business partner at a signing and it is
"Seh-moe-neh" not Simon and Legno is just like it looks "Leg-No"
see-mo-neh leh-gnio..
i explain. gn sounds like the spanish letter Ñ, however there is no such letter for this sounds in english(if you know spanish, theres your answer, if not, keep reading), thus, no words in english with this sound. in this case, you pronounce LEGNO, as you would use the GN in LASAGNA.
hope it was helpful.