I was searching on Google Books and found this excerpt from the book

Chinese Historic Sites and Pioneer Families of Rural Oahu by Tin Yuke Char 1988

There are references to the Chang Ah Gett family.  Need to get a copy of this book and article.

Tin Yuke Char also got a book ‘Chinese historic sites and pioneer families of Kauai.  THere are Ching’s and Chang’s here.  

Aunty May Blossom Chang Wilkinson mentions that Chang Ah Gett had a sister and he came from Kauai.   Need to discover and research more of this.  Ching’s, is the last name of E.K. Wung’s wife Alicia (Ching) Mother of Jean Wung Chang.  The Ching’s came from Kauai.

Chinese historic sites and pioneer families of rural Oahu Wai Jane Char, Tin-Yuke Char 0 Reviews Hawaii Chinese History Center, 1988 – History – 276 pages