Who was an historical figure of hinduism and a historical event if any

There are several of historical figures in Hinduism of lately
Shri Ramakrishna paramhansa and his devoted disciple Swami Vivekananda ji and in our contemporary beings Swami Ramdev Ji from Patanjali yoga pitha in Haridwar (although he claims to be treating the sicks , he is a true reviver of old system of medicine in vedic system).