An African - Mansa Musa Of Mali was named World's richest Man Of All Time by Celebrity Net Worth ; Gate, Rothschild, Ford, Buffet also made List
"You've probably never heard of him, but Mansa Musa is the richest person ever. The 14th century emperor from West Africa was worth a staggering $400 billion, after adjusting for inflation, as calculated by Celebrity Net Worth. To put that number into perspective -- if that's even possible -- Net Worth's calculations mean Musa's fortune far outstrips that of the current world's richest man Carlos Slim Helu and family.
According to Forbes, the Mexican telecom giant's net worth is $69 billion. Slim edges out the world's second wealthiest man, Bill Gates, who is worth $61 billion, according to Forbes. Some of the oldest fortunes in question date back 1,000 years. No. 7 on the list, for example, is William the Conqueror. The illegitimate son of the Duke of Normandy, William lived between 1028-1087 and gained infamy for invading and seizing England in 1066." - Huffington Post
The 25 Richest People of All Time
#1 Mansa Musa I – Net Worth $400 Billion
#2 The Rothschild Family – $350 Billion
#3 John D. Rockefeller – Net Worth $340 Billion
#4 Andrew Carnegie – Net Worth $310 Billion
#5 Nikolai Alexandrovich Romanov – Net Worth $300 Billion
#6 Mir Osman Ali Khan – Net Worth $230 billion
#7 William The Conqueror – Net Worth $229.5 Billion
#8 Muammar Gaddafi – Net Worth $200 Billion
#9 Henry Ford – Net Worth $199 Billion
#10 Cornelius Vanderbilt – Net Worth $185 Billion
#11 Alan Rufus – $178.65 billion
#12 Bill Gates – Net Worth $136 Billion
#13 William de Warenne – Net Worth $147.13 Billion
#14 John Jacob Astor – Net Worth $121 Billion
#15 Richard Fitzalan 10th Earl of Arundel – Net Worth $118.6 Billion
#16 John of Gaunt – Net Worth $110 Billion
#17 Stephen Girard – Net Worth $105 Billion
#18 A.T. Stewart – Net Wort $90 Billion
#19 Henry Duke of Lancaster – Net Worth $85.1 Billion
#20 Friedrich Weyerhauser – Net Worth $80 Billion
#21 Jay Gould – Net Worth $71 Billion
#22 Carlos Slim Helu – Net Worth $68 Billion
#22 Stephen Van Rensselaer – Net Worth $68 Billion
#23 Marshall Field – Net Worth $66 Billion
#24 Sam Walton – Net Worth $65 Billion
#25 Warren Buffett – Net Worth $64 Billion
Source: http://www.celebritynetworth.com