Kalanithi married Lucy (née Goddard), with whom he had a daughter in 2014, Elizabeth Acadia ("Cady"). Lucy is an
associate professor at
Stanford University School of Medicine and wrote the epilogue to
When Breath Becomes Air. Lucy is the twin sister of Joanna Goddard of the blog
A Cup of Jo. Lucy has been in a relationship with North Carolina lawyer John Duberstein since Kalanithi's death. Duberstein's wife
Nina Riggs was a poet who wrote a memoir as she succumbed to cancer. Lucy had been in touch with Nina and even wrote a blurb for Nina's book; after Nina's death John reached out to Lucy for advice on how to grieve. Although Kalanithi was raised in a devout
Christian family, he turned away from the faith in his teens and twenties in favor of other ideas. However, he retained "the central values of Christianity — sacrifice, redemption, forgiveness" and returned to Christianity later in his life. ==Bibliography==