There are many variations of this name LOCKER. A branch from my family is spelled LOCHER.
German, contary to the beleif that it is a hard sounding language, is a musical language. When using phonetic notations with the German language one can never be sure if the "sound" is correct.It is not the eye that guides this language, but the ear. Like two instruments playing the same note, if one is our of tune, the sound is off.The same goes for speech.
Because of a hearing problem, my first German teacher, who spoke like a well tune orchastra, told me to quit before I ever got started.He was right.However, I will try to recall what little I can remenber of general lessons learned over 30 years ago.
Nouns are masculin, feminine, and neuter Nouns are either nomative(singular or plural) or accusative(plural)
There is no set rule for the change of sound of a noun in the plural form.Each has to be learned throught careful listening.The general rule is:
a, o, u, and au may change to use the umlaut
if the noun already has an umlaut in the singular, this umlaut is retained in the plural.
To answer your question, the umlaut is used to direct how to pronouce the noun and gramically write it, not to alter it's original spelling.
The variation in spelling begins when the dilect to the ear sounds the same.
The Locker name of Switerland The Lo:cker name of Austria The LocHer name of Germany
My roots go from Locher in Germany to LocKer in Switzerland. Intesting to note that one branch of the same family changed it's LocHer in Switzerland to Lauber when it migrated to Germany.A marrage between the two families occured so I have one set of common ggggggggg who are Locher/Lauber with the same Swiss roots.
Don't let the Spelling stop you, let it quide you as the unlaut was intended. Best of luck in your research. Linda