Naming your child allows you to refer to them by name. Each time you think of them or talk about them, their name is voiced and they are acknowledged. Naming your baby can help place them within the family context as a child, brother or sister, grandchild, or cousin. It can also help with siblings when they talk about them and for relatives and friends to relate to your child as a person who was very real but has died.
Some people like to hold a special naming ceremony. This can be something that is done separately or as part of a funeral service. The ceremony is usually seen as acknowledging and giving the child a name and can be different from a funeral, which is possibly seen more as a farewell ceremony.
You could do this yourselves or hire a celebrant. For parents with religious beliefs you may wish to ask for your priest, minister or Rabbi to see your baby and possibly christen or baptise them with family and some friends present. If you have Christian beliefs and wish to baptise your child soon after their death or as they are dying, but a member of the clergy are not present or available, it is possible for you, your partner or your caregiver to do this with plain water.