Can anyone tell me what Haku'ia means in Hawaiian?

Hello! Apparently you have 2 different questions. As far as I can tell, kauiis not a word in Hawaiian; maybe you meant Aina Kauai, which would make perfect sense--it means Land of Kauai (Kauai is one of the Hawaiian islands.) See the definition for Aina here (http://en.wikipedia.org/wiki/Aloha_Aina_Party_of_Hawaii).

As for haku'ia or Haku'Ia, haku means lord, and ia is Hawaiian's third person singular--he, she, or it. It would usually be capitalised, as in your example, when referring to God or the Lord Jesus. Compare John 21:20 in Hawaiian (http://www.baibala.org/cgi-bin/bible?e=d-1off-01994-bible--00-1-0--01994v1-0--4--Sec---1--1en-Zz-1-other---20-frameset-search-browse----011-01994v1--210-0-1-escapewin&a=p&p=frameset&d=NULL.4.1.4&toc=0&gg=text&bibleyear=1994) and in English (http://www.biblegateway.com/passage/?search=jn%2021&version=ESV).