Changes

|name=Otto IV

|name=Otto IV

|image=  

|image=  

|birth_date=1175

|birth_date=c. 1175/1182<ref>https://www.britannica.com/biography/Otto-IV</ref>

|birth_place=

|birth_place=

|death_date=May 19, 1218

|death_date=May 19, 1218

|succeeded=[[Frederick II, Holy Roman Emperor]]

|succeeded=[[Frederick II, Holy Roman Emperor]]

}}

}}

Otto IV (1175 - May 19, 1218) was Holy Roman Emperor from 1209 until 1215 when he was forced to abdicate.

Otto IV (c. 1175/1182 - May 19, 1218) was Holy Roman Emperor from 1209 until 1215 when he was forced to abdicate.