From: Rabbi Moshe Sofer
To: Rabbi Yechezkel
A woman named Slavve received a get listing only that name, but a name-change during childhood illness had been entirely forgotten by all parties. The Chasam Sofer rules the get valid on multiple grounds: R' Peretz's requirement of two gittin applies only l'chatchila and not in cases of iggun; the forgotten name need not appear once recovery has occurred; women's names are more easily forgotten and R' Peretz's stringency does not apply to them; and in any event the name Slavve functions as a valid chanikah, universally accepted by all poskim.
Source: Shu"t Chasam Sofer EH II §27