How do you deal with night terrors in one year olds?

Tweet

My one year old twin grandsons seem to be experiencing "night terrors". If any of my four natural children experienced this I don't remember, but my grandsons are waking every night crying but not awake and inconsolable for a period of time before they fall back to sleep. All the internet research I have done points to night terrors. My poor daughter is eight months pregnant and not getting any sleep at all. Any advice on how to deal with night terrors? Much appreciated!