By Reuters Staff2 Min ReadLUSAKA( Reuters)-The burial of Zambia’s founding president, Kenneth Kaunda, started on Wednesday despite a court challenge by one of his sons against his burial site. FILE PHOTO: Former Zambian President Kenneth Kaunda, who died in June, is seen attending the celebration of the 35th anniversary of Mozambique's independence from Portugal, in Maputo June 25, 2010.... REUTERS/ Grant Lee Neuenburg/ File Photo Kaunda ruled Zambia from 1964, when the southern African nation