Hi Minori, I found this article on Chinese American names: http://ir.library.osaka-u.ac.jp/dspace/bitstream/11094/4213/1/ahs31_241.pdf
11:12 Kumajudy http://www.discovernikkei.org/en/journal/2014/7/22/japanese-name-in-usa/
11:14 Kumajudy http://maki.typepad.com/justhungry/2008/12/the-name-order-for-japanese-americans.html
http://www.ancestry.com/name-origin?surname=mayeda
http://www.discovernikkei.org/ja/journal/2014/7/22/japanese-name-in-usa/