My mother who was born in Canada was called Aletha and gave me that name. I always wondered whether the name originated in North America, I have passed it on to my children and then their grandchildren but it is not used in England. People always remark on it here.
Aletha Solter (PhD) is a Swiss/American developmental psychologist who studied with Jean Piaget. Her specialist areas are attachment, trauma, and non-punitive discipline.