【How-to】Where is the travelling merchant runescape

If you maintain a 10-heart relationship with your spouse, already have the nursery, have not removed the crib, and have been married for at least 7 days, there is a ≈5% chance that you will be asked if you want to have a child. If you agree, the baby will be born after 14 days and appear in the crib in the nursery.