I have never seen a reference to her name. As you can see from the most of the geneologies given, the name of the woman is not mentioned.
So the slate is wide open for you to create a Queen of Dale. The Master of Laketown and his wife are also not named (AFAIK), so you can create names and histories for them as well.
"The darkest places in hell are reserved for those
who maintain their neutrality in times of moral crisis."
Dante Alighieri
"A day without sunshine is like, you know, night."
Sandra
"Michael Moore is reminiscent of a heavy-handed Leni Riefenstahl, who glorified Nazism in the 1930s." Peter Worthington, Toronto Sun.