Sempstress Is A Synonym of Seamstress

The Sempstress by Richard Redgrave

Definitions of sempstress on the Web:

• dressmaker: someone who makes or mends dresses
  wordnetweb.princeton.edu/perl/webwn
• A seamstress, a woman employed to sew
  en.wiktionary.org/wiki/sempstress

*I don't remember where I read this!