"We decided today to pay tribute to all those hundred thousands young people who came from all over the world in order to fight and unfortunately die for our freedom," Mr Bouwens said.
"We decided to buy nice flowers and to put them on the grave of the very first and famous captain of the Original All Blacks, Davy Gallaher, who died in 1917 in our Flanders Fields in a little place close to Ypres."
Mr Bouwen said since his daughter's honeymoon in New Zealand, his "little family" fell in love with the country and the All Blacks.
The family even went to Cardiff to watch the team play Georgia during the Rugby World Cup, and followed them through to the final against the Wallabies at Twickenham.
According to New Zealand History, Sergeant Dave Gallaher was wounded during an attack on Gravenstafel Spur, in the west of the country, on October 4, 1917.
He died a few hours later and was buried at Nine Elms Cemetery, Poperinge.