Matthew 1:23
Behold a virgin shall be with child, and shall bring forth a son and they shall call him Em-man-u-el (Immanuel) which being interpreted is God with us.
I guess he's ticked about being mislabeld for 2000 years.
Like Matthew says, Emmanuel is a title not a name. When Matthew the scribe writes 'behold a virgin shall be with child', he is actually quoting another older scriptural reference which is the 'prophecy' which is supposed to be actualized, and the original prophecy is not that a virgin will be with child, but that a "Young Woman" shall be with child (like someone else said, virgin is a mistranslation of almah, which means young woman).
So Matthew was proclaiming a prophecy that was being fulfilled in Jesus' birth, according to which was understood at the time, not naming him.
Someone correctly inferred that Emmanuel is an angel name- this should be correct, as it ends in 'el', which is the short version of Elohim, which is the plural version of God. So the suffix (or prefix) el means 'God in', like all the other angel names (Michael, Raphael, Uriel, and Gabriel) All these names have an aspect and are 'of God', or 'God in...'.
So you can see linguistically Emmanuel, like Messiah and Christ, is a title, not a name.