You can sponsor other relatives besides your immediate family members under certain circumstances:
Orphaned brother, sister, nephew, niece or grandchild
You can sponsor an orphaned brother, sister, nephew, niece or grandchild only if they meet all of these conditions:
Other relative
You may sponsor one relative, related by blood or adoption, of any age, if you meet all of these conditions:
Note: If the relative you want to sponsor has a spouse, partner, or dependent children who will come with them to Canada, you must include them on the same sponsorship application.
Still not sure about your eligibility or need help regarding your application?
You can sponsor:
Your brother, sister, nephew, niece, grandson or granddaughter, who are orphaned, under the age of 18, and not married or in a common-law relationship
another relative if you do not have a spouse, common-law partner, or conjugal partner, or one of the following living relatives below (excluding the person you wish to sponsor) which you could sponsor instead:
AND:
you do not have any of the relatives mentioned above who:
is a Canadian citizen, permanent resident, Indian (Native, registered under the Indian Act)
have an application for permanent residence that is being currently processed