Hertha Marks Ayrton was born in 1854.
Hertha Ayrton has written: 'The electric arc' -- subject(s): Electric arc
According to her wikipedia article Ayrton died in the 20th century, specifically on 23 August 1923.
Renowned feminine mathematicians' surnames would naturally include, but could not be limited to; Annie Dale Biddle Andrews, Winifred Asprey, and Hertha Marks Ayrton.
Maxwell Ayrton was born in 1874.
Moses Ayrton was born in 1878.
Edmund Ayrton was born in 1734.
Ayrton Fagundes was born in 1937.
Hertha Töpper was born in 1924.
Hertha Pohl was born in 1889.
Ayrton Senna was born on March 21, 1960.
John Ayrton Paris was born in 1785.
Ayrton Ganino was born on 1985-04-19.