No.
1. AMASS originates from Taiwan, China. AMASS was founded in 1977 and belongs to the promotion series of the Gedi brand.
2. Saint Ammastasia is a registered trademark of Hening Clothing Firm in Chenzhou City. Chenzhou Hening Clothing Store is located on Guoqing North Road, Beihu District, Chenzhou City, Hunan Province. So it's not the same family.