So, instead of writing recently I’ve been playing around with MacFamilyTree, which is a pretty neat genealogy application (I’m sure there are equivalents for Windows). Not only does it let you add in mothers, fathers, partners, brothers and sisters, but it then tells you the relationship between all these people, gives you plausibility warnings (e.g. if someone was married two years after they were born), and gives you the person’s age at time of death.