Hi Sharon,
I don't know anything about this style...sorry, I should say 'Ryuha' since people might think we are talking about the Ichikawa kata... {ref from another post}. but I did dig up someth things burried deep in some cross reference google searching:
"Goju Master Sosui Ichikawa, one of the great masters in Japan, although he is little known outside of his native land. Master Ichikawa was a student of the great master Kanki Izumikawa of Kawasaki who in turn learned from Miyagi Chojun's senior student Higo Seko."
here is a link to a dojo with that lineage:
http://www.goju.com.au/for convienence:
http://www.goju.com.au/shihan/profile.htmanother:
http://www.heikoryu.com.au/history.htmlrecent news:
"Sensei Sosui Ichikawa 10th Dan, died in his dojo in Japan on 6th March 2005, aged 80 years."
take care, hope I helped.