A surname alone does not establish a qualifying relationship. Review the actual relationship records and dependent process; TD does not authorize employment.
Use individual evidence
The principal’s credential and name history do not replace a relative’s identity and status records. The dependent category is for a qualifying spouse or unmarried child under 21; each person needs valid status.
The first review should produce a household plan that names the principal route and every separate work, study, or travel question.; each conclusion should point to the record that settles it. TD status carries no employment authorization of any kind, and working remotely for a Canadian employer while physically present in the United States is still work performed in the United States. If the spouse wants an independent professional route, assess their own citizenship, qualifications and offer rather than treating the principal’s TN case as covering both designers. Where a dependant holds a different citizenship, such as Canadian citizenship by birth or naturalisation, their entry route may differ entirely, so confirm each person's documents, relationship proof, and any visa requirement before a joint travel date is booked. Obtain specific advice before any employment, remote activity or unpaid placement rather than assuming the academic records create permission.