My "Ziegler" Family Photo's

Please help to Indentify these photo's.

My family believes this is one of Heinrich's brothers,either Karl Or Ernst Ziegler and Their Family on the back of the photo it has "Horb" written on it?

Family believes this is Heinrich's sister. We are not sure of her name.  Maybe it's Meta Ziegler?

Family believes this is Luise Ziegler Nee' Greve older

Again,family believes this is Luise Ziegler Nee' Greve as a younger girl

Family believes this is Johann & Luise Ziegler Nee' Greve