Adding extra details about a contact can help Siri know more about you.
Start Siri and then say a contact’s name followed by their relationship to you – for example, “John Appleseed is my brother.” Siri will then ask you to confirm the relationship.
You can add all types of relationships, including, mother, partner, siblings, and more.
You can then say, “call Mom” or “email boyfriend” and it will know who to contact straight away. Plenty more can be added too, such as work, or your personal nemesis.