The AFL subsequently clears Ellis of any wrongdoing after an investigation.
"Xavier Ellis and Hawthorn came forward to the AFL and brought this matter to our attention once they became aware that a relative had used his account to place bets involving AFL matches," AFL football operations manager Adrian Anderson said in a statement.
"The investigation confirmed no breach of the AFL regulations.
"The investigation found that no bets were made by Xavier Ellis and he had no knowledge of the bets made by his relative."
"When I found out that my account had been used to place some bets on AFL I felt sick and I knew I had to take it straight to the club," Ellis said.
"Thankfully the AFL investigation has cleared me of any breach of the AFL regulations and I am pleased to have my name cleared."