um u ▁senior ▁side , ▁William son ▁went ▁back ▁to ▁ref ere eing ▁in ▁ 1 9 9 7 . ▁ ▁William son ▁started ▁his ▁international ▁career ▁in ▁ 2 0 1 0 ▁ref ere eing ▁Japan ▁v ▁Sam oa ▁in ▁Tokyo . ▁From ▁ 2 0 1 1 ▁on wards ▁he ▁was ▁mainly ▁an ▁assistant ▁ref eree , ▁featuring ▁in ▁the ▁ 2 0 1 2 ▁June ▁test ▁series ▁with ▁Australia ▁and ▁Wales . ▁ ▁References ▁ ▁Category : 1 9 7 1 ▁birth s ▁Category : New ▁Zealand ▁rugby ▁union ▁ref ere es ▁Category : L iving ▁people ▁Category : Pe ople ▁from ▁Par ap ara um u ▁Category : Super ▁Rugby ▁ref ere es <0x0A> </s> ▁Pedro ▁I bar ra ▁( born ▁ 1 1 ▁September ▁ 1 9 8 5 ) ▁is ▁an ▁Argent ine ▁field ▁hockey ▁player ▁who ▁plays ▁as ▁a ▁def ender ▁for ▁San ▁Fernando ▁and ▁the ▁Argent ine ▁national ▁team . ▁ ▁He ▁made ▁his ▁debut ▁for ▁the ▁national ▁squad ▁in ▁ 2 0 0 4 , ▁after ▁having ▁played ▁the ▁Junior ▁World ▁Cup ▁in ▁Rot ter dam , ▁Netherlands . ▁He ▁finished ▁in ▁t enth ▁place ▁with ▁his ▁national ▁team ▁at ▁the ▁ 2 0 0 6 ▁Men ' s ▁Hockey ▁World ▁Cup ▁in ▁M ön ch eng lad bach , ▁and ▁in ▁t enth ▁at ▁the ▁ 2 0 1 2 ▁Summer ▁Olympics . ▁Pedro ▁won ▁the ▁bronze ▁medal ▁at ▁the ▁ 2 0 1 4 ▁Men ' s ▁Hockey ▁World ▁Cup ▁and ▁three