At least "Matthea" sorta of has some relation to "Matthew", a real name that's, well, unfortunately meant for boys. . . I never could figure out who had it worse, me or my brother. His name's "Matheus," and it gets mangled into things like "Malthus", "Morpheus", "Mattioos." I've always thought it was worse for me, though, since I'm a girl - try being called "Matthew" on your first day of highschool. That was me in grade nine, baby. Lucky me! On top of that, I've also gotten "Maffea", "MATtheea", "Ma-TEEa", "Ma-Tay-a". I think the best was blurted out by my outdoor ed teacher's wife, who was trying to get my attention on one of our trips: "Matthoo!"
So, if there are any other Mattheas out there, and can sympathize with my case, drop me a line and let me know what hilarious name-slaughtering experiences you've had!