The four girls in back, left to right, are Marie, Sophie, Lena and Anna. The people seated are Ella, Sylvester, Syver and Mildred.
Mildred was born in 1903, Sylvester in 1904. Sunneva was born in 1907 and isn't here. I used that to fix the time.
This is another example of the incredible likeness of Marie and Lena. I always have to look twice to be sure which is which. .