If OP misrepresented then immigration officer must not have landed him in canada.
I don't think this is a case of misrepresentation.
When did you get married? Before or after you landed in Canada?
If the situation is as I assume, from what you've described:
The immigration officer doing your landing, when they found out, should have notified the you (OP=Original Poster) of the consequence of impossibility of sponsoring your undeclared spouse and subsequently could have landed you or given the option to withdraw application pending further review.
There are so many documents that you will have received from the Visa Office and IRCC that clearly say to declare ANY change in personal circumstance, specifically listing marriage. There should have been no way for you to have been unaware of the requirement had you read the documents. That an immigration officer subsequently landed you is, to me, of little relevance to your obligation to be informed.
Unfortunately, and as I understand it, you will not be able to sponsor your wife under the Family Class but she will have to become a PR on her own merit.
However...
It all depends on when you got married. Did you get married before, or after you became a PR? Keep in mind that you only became a PR on the day that you entered Canada with a CoPR and spoke to an immigration officer. You will have signed the CoPR and given an address at which to send the PR Card.
If your marriage was before this, then the above applies. However, if you got married after this then you should be fine to sponsor your wife, as long as the two of you hadn't been living together for over a year prior to you landing.