Their grandfather, Ted, died last week aged 78 and Beauden said the quarter-final week had been "tough" but the team had rallied behind them.
All three stayed and helped the All Blacks to a 46-14 victory with their father Kevin, who was nicknamed 'Smiley' during his playing days, watching in the stands.
"Last week was a tough week for dad and for ourselves so it was awesome to share that moment with him," fullback Beauden told reporters after being named in the team to face England in the semi-final tomorrow.