SINGAPORE - The three sons of the late banking tycoon Wee Cho Yaw are newly minted billionaires, according to a Forbes' list of global billionaires released on April 2. UOB chief executive Wee Ee Cheong and his brothers, Mr Wee Ee Chao and Mr Wee Ee Lim, are among 39 billionaires from the Republic - a number that rose slightly.