you can't add the children without a birthdate so they will be in order, surely? Spouses, now that's different, If you think they came in a certain order but you have no specific dates, you can always add a date that is approximate, based on what you know about the person or tick "before this date" and use the date of the eldest child's birth as a guide until you can find a source. Or you could just leave it blank for now and try to find a source for them.