King Siddharta, his wife Jasodhara, and other buddhas

What happened to king Siddhartha after he left the palace after renouncing the duty of King?How many days queen Jasodhara remained in the palace with his son?A king is not so weak minded so that he he will give up kingdom.This is hard to believe he forsook every kind of luxury after seeing a Deadbody and a blind person or leper.what occured to him,many learned writers have written.After king siddhartha,there were other Buddhas which include Ananda and other Buddhas who took over preaching and practice.since king Siddhartha was king of a kingdom he did not live the life of a sage for a long period.This is obvious. Queen Jasodhara also left the palace with his son.My question is what king Siddhartha Gautam and other renowned Buddhas were in the sight of new king and his ministry.Buddhism existed even before king Siddhartha Gautam. And what happened to Queen Jasodhara and his son?I request answer what I can believe because the history is about 5000 years old.BUDDHADEB IS ALSO KNOWN AS SHAKYAMUNI.