Dyma'r digwyddiad cyntaf mewn amserlen brysur i'r Dr Stern, a fydd yn cael ei groesawu gan ysgolion, y Sefydliad Diwylliannol Mwslimaidd Cymreig, carchardai a grwpiau eraill ledled De Cymru dros yr wythnos i ddod.
The event was the first in a busy schedule for Dr Stern, who will be greeted by schools, Welsh Muslim Cultural Foundation, prisons and other groups across South Wales over the coming week.