Given the question: Read the bio below and try to give details on john ernest , duke of saxe-coburg 's: - death place - reign - successor - mother - predecessor - death date - house - father - birth date - name - image - birth place - religion Bio: john ernest -lrb- -rrb- -lrb- 10 may 1521 -- 8 february 1553 -rrb- was a duke of saxe-coburg . john ernest was born in coburg as the third -lrb- but second surviving and the youngest -rrb- son of john , elector of saxony , and his second wife margaret of anhalt-kothen . after the death of his father -lrb- 1532 -rrb- , his half-brother , john frederick i , assumed the title of elector of saxony ; john ernest took part with him in the rule over the electorate of saxony . in 1542 john frederick i decided to rule alone , and ceded to john ernest the franconian areas of the wettin family lands -lrb- coburg , eisfeld , etc. -rrb- ; but it was not until 1547 -lrb- after the battle of muhlberg -rrb- when john ernest could govern undisturbed in coburg . after he died unmarried and childless in coburg , the city fell for a few months to john frederick -- dismissed from the imperial detention -- before his death , and then , to his three sons , which governed the ernestine lands together from 1554 for some years .
The answer is:
- death place is coburg- reign is 1542 -- 1553- successor is john frederick ii- mother is margaret of anhalt-kothen- predecessor is john frederick i- death date is 8 february 1553- house is house of wettin ernestine line- father is john , elector of saxony- birth date is 10 may 1521- name is john ernest- image is 1521 johann ernst.jpg- birth place is coburg- religion is lutheranism