Adolf’s father, Alois Hitler, died in Jan 1903 while Adolf was still only 14, apparently of some sort of burst artery in his lungs. The attack happened suddenly. He was 65 and a retired customs official. So his death wasn’t a particular surprise.

Adolf’s mother, Klara Hitler (formerly Klara Pölzl) died almost 5 years later in Dec 1907 from breast cancer. Adolf was by then living in Vienna still with the hope of gaining admission into the Academy of Fine Arts Vienna.

We don’t know a lot about how his parents felt about Adolf. They both died before he was fully a man, and well before he developed his political ideals and ambitions. When his mother died, he was still just another starving artist living off of his orphan benefits from Alois’ pension.

Both of Hitler's parents were dead by the time he turned 19 — his father Alois Sr. of "apoplexy" (probably a pleural hemorrhage) in 1903 and his mother Klara of breast cancer in 1907 — before even his failed bid to attend art school in Vienna, much less his adult career as infantryman, politician and mass-murdering fuckhead.

Alois Sr. was an abusive drunk who had little interest in being a father and, needless to say, didn't approve of his son's plan to become an artist. Klara was a doting, overprotective and permissive mother who, by all accounts, shared a genuinely loving relationship with Adolf. Although run-of-the-mill German nationalism was pervasive in Linz at the time, it's unlikely that Hitler's openly and violently antisemitic beliefs developed until after WWI, so it's hard to say that his parents' opinions of him would have been anything particularly unusual or historically noteworthy.