Aaron was born in 1855.
 
       He was a strong, athletic youth and had a swaggering demeanor and outgoing personality.
 
       It was said he was second only to Ned in toughness, yet he considered Ned as almost superhuman. 

       Aaron was from a Protestant family, but attended a Catholic school where he made the acquaintance
       of Joe Byrne, who was a couple of years his junior. The two boys were instantly drawn to one another
       and an intense bond of friendship was forged.
 
       Aaron had a romance with Joe's sister and Joe in turn went out with Aaron's sister. 

       Aaron & Joe did time in gaol together.

       Ultimately, this union was to end tragically as the two men lost their friendship and their lives within
       days of each other.

       Joe murdered Aaron after becoming convinced that Aaron was spying for the police. 
 
       The truth however was that Aaron had been providing the police with 'cold' information and accepting
       money from them,  but he never gave enough useful information to endanger the gang.

       The police view of Aaron was that had he not been killed by the gang, he would also have been lost
       to the police and become a bushranger himself.