Generally no, all communication between husband and wife is what is called Spousal Privilege that states one may not force a wife to testify against her spouse. However, the Spousal Privilege may be breached by an exception to the rule.
A parent company is a company that owns enough voting stock in another firm (subsidiary) to control management and operations by influencing or electing its board of directors. A parent company could simply be a company that wholly owns another company.
A subsidiary is a corporation owned 50% or more by another corporation. The owning corporation is usually called the parent or holding company. A company that is 100% owned and controlled by ... Markets. A company whose common stock is 100% owned by another company, called the parent company.