Hi, I am a Canadian Citizen and live in Canada. I am a widow and don't have a daughter or son. My mother is alive, not a Canadian citizen, and is also very old to travel with me to Canada. I also don't have a brother, sister, or any blood relative who is a Canadian resident or lives temporarily in Canada. I want to sponsor my nephew who is 18 years old. He is not an orphan or married. Can I sponsor him?