Zheng He commanded the massive Treasure Fleet in early Ming China. He survived a rather burtal  childhood, and rose up to  the highest position ever for a Eunuch. He sailed all over the Indian Ocean, and if it weren't for a change of Emperor (something that happened often in his time) he might have reached areas of the globe hundreds of years prior to when Explorers of Europe did. 

Strider Wilson's Stand Up Special Makin' Memories

Sources: history.com, britannica.com, Thoughtco.con, china.org.cn, daily.jstor.org, The Intellectual Devotional by David S. Kidder and Noah D. Oppenheim 2010, brainyquote.com, waterford.org, wikipedia.org, livescience.com