Siddhartha was also known as Gautama Buddha or simply the Buddha.
Siddhartha Gautama(Budhha) "died" so no one knew that Siddhartha Gautama(Buddha) left his family.
His father didn't let him leave because he was worried that Siddhartha would want to leave the royal life to become the Buddha, when, if Siddhartha did stay in the royal life, he would become the ruler of the universe, which is what Siddhartha's father wanted him to become. To find out more on Siddhartha's life, you should research it if you want to.
Siddhartha gets his father's blessing by earning his respect. He stands and waits next to his father's bedroom steadfastly, never wavering. Although his father gets annoyed that he won't leave, he takes notice that Siddhartha would not just run off without his father's permission. Siddhartha knows that it wouldn't be right to do that, so he waits, knowing that he will be granted permission to leave sooner or later. Siddhartha's honesty and dedication finally wore on his father, and he allowed Siddhartha to leave and join the Samanas.
pain and suffering
to help those who felt pain and were suffering
He didnt
Guatama hoped to learn the mystery of life.
they didnt
He would simply ignore you and tell you he has other plans for stuff that you wanted to with him.
to help those who felt pain and were suffering
Siddhartha left his family to become Buddha and find enlightenment