If you have students who enjoy reading about royals you can use this classic information gap.
In order to find the required information they have to use the correct question word and make questions in the past simple. Depending on their level they will need more or less pre-teaching / revising before they do the activity. If they are insecure they may also write their questions before they do the activity.
On p 3 you will find the full text for your own Information.