Friedrich Wilhelm Zachau (Zachow) (1663-1712) was a German musician and composer. According to Wikipedia, he was George Friderick Handel’s first music teacher.
I first saw his name in a book of liturgical organ chorales, ORGELCHORALE IM KIRCHENJAHR, which I got in Tokyo more than thirty years ago. The book has 71 short chorale preludes arranged by a number of composers.
One of the first pieces in it that I learned to play was Allein Gott in der Höh sei Ehr (All Glory Be to God on High). The following is a recording of this piece I played on the electronic keyboard in my room.