He also gives away the anti-dragon shield to those that have started the non-member quest, Dragon Slayer. Some players ask for many dragon shields, to earn money or to use as disposable shields to pass dragons on the way to other foes. Previously the Duke used to give shield only to people with no anti-dragon shields in their inventory or bank, and so players use the drop trick obtain multiple shields. After an update, he gives an unlimited number of anti-dragon shields.
He was also part of the Battle of Lumbridge World Event. Players on members' worlds could talk to him (or right-click and select "manage") to vote on the allocation of resources in Lumbridge's reconstruction. A new vote was available every week (bar the final two), along with a reward of bonus experience.
Assuming that he was between 0 and 2 years old when his father took him to Crandor in 129, and 10 to 12 years old (which he describes as being little) when Crandor was destroyed in 139, Duke Horacio is between 41 and 43 years old. He was previously married to Duchess Oriana, but she died sometime prior to 169.
He inherited the position of duke from his father, and it has been passed down in his family for many generations. It was first granted to his ancestor Polonius by King Claudius of Varrock, and it was Duke Polonius who built the current Lumbridge Castle on the site of the original wooden fort.
Horacio now rules Lumbridge as a vassal of the King of Varrock. His servant is Hans. Horacio is proud of Lumbridge's reputation as a welcoming and accepting place. In the final stages of the Zamorakian Insurrection of 165, he rode through Silvarea next to King Roald, their troops behind them, and participated in the Second Battle of the Salve.