I got a middle name too, actually it is my first name but it is not used, my parents got the wise idea to give me a first name (which is on all official documents like drivers licence and a "calling" name which is actually my 2nd name)
so it came that when i had to go for the german army "Bundeswehr" they called me with my 1st name which i wasnt used to, i didnt react and the officer got pissed of mumbling something like "those recruits dont even know their names" ;-).
The reason why my parents changed my "calling" name to Matthias is cause a grand aunt remembered a drunkard in the family line which had the name which i should get as 1st and calling name so she thought it would be an ill omen. I am grateful for this aunt ... M. J. Haegele ;-).