The man killed when his mobile home collided with a truck near Levin on Monday was retired Masterton man Trevor Sturgess.
Widower Mr Sturgess, 83, had been staying with his daughter Linda at Foxton Beach, where only the day before the crash, he had nursed his newest grandchild, 11-week-old Oliver, for the first time.
Linda Sturgess said her dad was meant to return to her home on Monday night "but never made it".
Instead he died at the scene of the crash on State Highway 1 near Levin when the mobile home he had owned for about 15 years collided with a fully laden truck and trailer near the intersection of the highway and Kimberley Rd just after 1pm.
His passenger, an elderly Masterton woman who police have not yet named, was seriously injured and rushed to Palmerston North Hospital, where she was last described as being in a stable condition.