Gender: girl
I feel that I have found Miriam's father! I searched the database using the last name Znamirowski and found a man, ABRAM SZLAMA ZNAMIROWSKI, who is a match to Miriam in address. He was born in 1892, moreover, which would have made him thirty-five years old in the year of Miriam's birth.
I think you're right! The age and address make him a very good candidate to have been Miriam's father.
Anyone else have any thoughts?