AliceAlice (!) L. Milligan and Charlotte Milligan Fox were daughters of Seaton F Milligan a North of Ireland Methodist businessman and antiquary. Charlotte, in particular, was a collector - she publisehd Annnals of the irish Harpers based on Buntings collection. Alice was more literary - and more politically involved. Wrote plays, poetry essays etc.
Whicch just leaves the question of "E. Milligan"!
Regards
p.s.Source is the Dictionary of Irish Biography.