Finn married Sharon Dawn Johnson, on 13 February 1982. The song "I Love You Dawn", available on "Afterglow" was written in her honour. Sharon makes chandeliers in her workshop in Auckland. She has appeared on backing vocals on various albums such as "Crowded House" and Alex Lloyd's "Watching Angels Mend" She also features prominently on the second 7 Worlds Collide project, co-writing (and sharing lead vocal) the track 'Little By Little' with her husband and sings on the track 'Isolation' on the new Crowded House album, Intriguer. In 2011, she becomes part of the "Pajama Club" band after a jam session with Neil.