On-line Te Reo Māori Dictionary

Ko Chris te tama a Richard rāua ko Gin.
Chris is the son of Richard and Gin.
Talking about more than one person - ...rāua ko..., rātou ko...

Ko Aroha te tamāhine a Taika rāua ko Kauri.
Aroha is the daughter of Taika and Kauri.
Talking about more than one person - ...rāua ko..., rātou ko...