But it doesn't necessarily work like that.
I had no major grief when my mother and father died, as I had never been very close to them. I'd been estranged from my father for 20 years, as you know, so there was no closeness there. I wasn't close to my mother either, as we were very different, thoroughly chalk and cheese, and though it was truly sad to see her gradual mental and physical decline, I didn't grieve for her.
I've actually grieved more, or at least been more emotionally affected, by the death of people outside my family - like public figures I admired and who died at an early age. So much potential unrealised, such a shocking waste.
I was very upset when John Lennon died. He had so many creative years ahead of him still, and suddenly he was gone. Likewise Amy Winehouse, who was so amazingly talented but who was struck down in her prime.
I was stunned when Martin Lamble, drummer with Fairport Convention, who was only 19, died in a road accident on his way back from a gig in Birmingham. He was a friend of a friend and I had met him several times.
I was shaken when two people I worked with in a London bookshop both died of cancer in their thirties - Amanda of breast cancer and Nigel of lung cancer. They were both lovely people and shouldn't have met such an early end.
Grief, and who provokes it, can surprise you.