This cabinet card portrait is of European origin but I am clueless about determining it’s nationality. Hopefully, a member of the cabinet card gallery’s research department (the gallery’s visitors) will leave a comment telling us the photo’s national origin. There is evidence (an inscription) on the reverse of the photograph that will help someone with the identification (see image below). The photograph itself features what appears to be a family of five. Perhaps the adult in the photograph is the children’s grandmother but it is possible that she is their mother. The two girls sitting on the wall look incredibly adorable as they sit nearly on top of each other in a show of affection. The child wearing the fez appears to be a boy. I can not determine what he is holding in his left hand. The object looks like it could be the hilt of a sword (hopefully a toy). Perhaps a cabinet card gallery visitor can determine what exactly the lad is holding. Grandma, or is it Mom, appears quite proud of her brood of children.
THE CABINET CARD GALLERY 
I tried to translate some of the words on the back and a few come up as Polish….so that is a guess….
beautiful children ……the 2 little girls with the longer hair look soo much alike they could almost be twins….and the object in the little boy’s hand does look like a sword.