This is the list of children that I have:
Albert August Sy born August 10, 1877 in Grimm Uckermark Preussen, died June 13, 1889 Johnsburg of Peritonitis.
Gustav Ferdinand Sy born June 11, 1882.
Hermann August Sy born November 30, 1885.
Johann Rudolph Albert Sy born January 11, 1888.
Daughter Sy born November 11, 1889 in Johannisburg, died November 11, 1889.
Where Johannisburg or Johnsburg are, I don't know.
The Church were the records came from still exists as Holy Ghost Lutheran Church on Luther St., Niagara Falls, New York 14304.