Grace Wee, the youngest child of Wee Ee Cheong, is buying the Ford Avenue property. : SINGAPORE - A scion of the Wee family, Singapore’s richest banking dynasty, is buying a $39.5 million mansion, taking advantage of a lull in the high-end real estate market. Ms Grace Wee Jingsi, the youngest child of UOB chief executive Wee Ee Cheong, is buying the good class bungalow in Ford Avenue, off Holland Road, according to property filings lodged at end-March and seen by Bloomberg News.