Single request, multiple models of the same type

I have a situation where user needs to fill one form that has student and partner information. I have to validate both at the same time and display errors - it's the same model that's duplicated.

Here is an example for the data I receive.

https://pastebin.com/w6j0R7sK

I have a RegisterRequest that looks like this,

public function rules() {
    return [
        'Email' => 'required|string|email|max:100|unique:students,Email',
        'Password' => 'required|string|min:4|confirmed',
        'FirstName' => 'required|string|max:100',
        'LastName' => 'required|string|max:100',
        'PhoneHome' => 'required|string|max:100',
        'PhoneCell' => 'string|max:100',
        'MaleFemale' => 'required|string|max:100',
        'Street' => 'required|string|max:100',
        'Apt' => 'string|max:100',
        'City' => 'required|string|max:100',
        'Postal' => 'required|string|max:100',
        'Date' => 'required|string|max:100',
    ];
}