Probably not. Women's suffrage wouldn't have been popular with Episcopalians in the 19th century.
Episcopalians were (and are) very loyal to institutions and institutional power and very, very establishment (and, overall, rich). Women's suffrage was an inherently anti-institutional, anti-establishment movement that sought to overturn male-dominated centers of power. That would never have sat well with Episcopalian men, who
were the power suffragists wanted to overthrow, or at least claim for themselves.
Episcopalian women might have favored suffrage, but no one was asking them, and in any case they would probably have, on net, been less likely to speak up about their opinions than women from other, much more suffrage-friendly denominations, like Congregationalists or Unitarians.
Witness that women's suffrage came even later in Britain than in the US (especially when you take into account that women's suffrage came decades earlier in parts of the western US than it did nationally), and of course Episcopalians have always been the most British Americans, in a wide variety of ways.
