>I got this from the Government of Ontario Web Site. I suspect the lack of gender specificity in the wording is deliberate, and that either spouse can change his/her surname to the spouse's. I certainly can't see why there would be a law preventing it.
>
>

>Change of Name
>
>Electing to change your name to a partner´s or spouse´s name
>
>Individuals may choose to change their surname (family name) or a combination (hyphenated
>surname) as a result of marriage or a relationship by filling out an Election Change of Name
>form.
>
>Couples who live together in a conjugal relationship may also change their surname(s) if they
>file a form called a Joint Declaration of Conjugal Relationship.
>
>There is no fee for this type of name change, if it is made at the time of the marriage or at
>the time of filing a Joint Declaration of Conjugal Relationship.
>
>Please be aware that if you elect to legally change your name and were born in Ontario, this
>type of name change will result in changing your surname on your birth certificate (it will
>appear as if you were born with your married name). If you wish to revert back to your previous
>name at any time, you will need to contact the Office of the Registrar General.
>

Thanks for sharing the information of your research with us.