Charlotte de la Cruz's uncle

The uncle of Charlotte de la Cruz became sick during her childhood. She recalled his insurance was denied because his illness was from a pre-existing condition, and not a result of his job, and that her family almost went bankrupt paying for his healthcare.

Her uncle's treatment planted a deep mistrust of authority in Charlotte. While working for Malta Banking Corporation, memories of her uncle led her to transfer ten thousand dollars to Ms. Morehead's account so she could care for her daughter.

Reference

 * Assassin's Creed issue 1