Walter married Grace Caroline VIAL, daughter of George Smith VIAL of Waikaia and Elizabeth SIMPSON, on 2 Apr 1902 in New Zealand. (Grace Caroline VIAL was born in 1871 in New Zealand and died in 1927 in New Zealand.)
Marriage Notes:
"ANDERSON-VIAL.— On the 2nd April, 1902, by the Rev. J. A. Will, Walter, eldest son of Walter Anderson, Lawrence, to Grace Caroline, second daughter of George Smith Vial, Waikaia."