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.
The company is a joint venture of Unilever NV (The Netherlands) and Unilever PLC (UK), the parent companies. Since 1930, the two companies have operated as one, linked by a series of agreements. They trade separately but have one board of directors.