Fuganto Widjaja is the grandson of Eka Tjipta Widjaja, the founder of the Sinar Mas Group, an Indonesian palm oil and property conglomerate started before the Second World War, in April 2015, he revealed a surprise takeover bid for Asia Resource Minerals, the coal mining company founded by which British-born financier who has settled in Switzerland, and a member of the prominent Rothschild family?