your step son in law it like the same thing as a son in law except its your step daughter's husband.
Your husband's step-daughter could be your daughter.Your husband could also have a step-daughter who is the daughter of a previous wife from her prior marriage to someone else. In that case, his step-daughter is not related to you, unless you adopt her.
She would be his step sister.
Your daughter's husband is your son-in-law.
Through marriage your step - sister's daughter is your step-niece!
None. She is your daughter's sister -in-law.
If the daughter is biologically related to you, it would be your great-grandchild. If your husband had his daughter before he married you (which would make her your step-daughter), it would be your step-great-grandchild.
Your mother's new husband is your step-father and you are his step-son or step-daughter.
The wife of a husband is referred to as the mother-in-law to her daughter's husband. In this relationship, the daughter's husband is the son-in-law to the wife. Thus, the connection can be summarized as the wife's relationship to her daughter's husband being that of a mother-in-law.
If a man has a daughter from a revious marraige, that daughter is the step-daughter of the second wife, and the second wife is the step-mother of the daughter.
Your mothers husband would be your step father and you would be a step son or step daughter.
If you have adopted your step daughter, thus making her your daughter, her husband is your son-in-law. If you have not adopted your step daughter, then her husband is not related to you. Some people find it convenient to treat him as a son-in-law, especially if the step daughter became part of your family when she was a child. Although a relatively recently invented term, and not widely used, some like to apply the term "step son-in-law."
Your son-in-law is your Daughter's husband. His family are part of your extended family but while your daughter is an Aunt (by marriage) to the child and the child is a Niece (by marriage) to your Daughter. The child is no direct relation to you.