When Constance of Sicily gave birth to Frederick II in 1194 she was already 40 years old, and many didn't expect she could still have children. So, WI she didn't get pregnant, or if she has a miscarriage and Frederick is never born? What would be the consequences for Sicily and the HRE?
IOTL she wanted her son to be raised as a Sicilian, and didn't want any involvement with Imperial matters (of course it didn't work). So, after her husband Henry VI dies in 1197, who could be chosen by the queen as the new Sicilian monarch? And, without Frederick II, could Otto IV keep the Imperial throne, or someone would depose him?
IOTL she wanted her son to be raised as a Sicilian, and didn't want any involvement with Imperial matters (of course it didn't work). So, after her husband Henry VI dies in 1197, who could be chosen by the queen as the new Sicilian monarch? And, without Frederick II, could Otto IV keep the Imperial throne, or someone would depose him?