Klaus’s father’s name was Eugen Wilhelm Schwab . Born in 1899

[...] As for the mother of Klaus Schwab, until recently there was no mention of her at all. Surprisingly, in 2021, Klaus Schwab publicly announced the names of his parents for the first time. Schwab’s book Capitalism of All Stakeholders is dedicated to parents: To my parents, Eugen Wilhelm Schwab and Erika Epprecht who taught me firsthand the value of education, collaboration, and the stakeholder principle.

[..]but this is a shameless lie. Erica Epprecht is the stepmother of Klaus Schwab. And his blood mother is Emma Gisela Tekelius Schwab , nee Kilian, the first wife of Eugene Wilhelm Schwab. She was 100 percent Jewish. Soon after the birth of Klaus, the persecution of Jews in Germany intensified, and his mother was forced to leave the country. On December 9, 1938, Emma Schwab emigrated to the United States under the name Gisela Schwab, leaving behind an infant named Klaus. Her further fate is unknown.

https://fitzinfo.net/2021/12/20/wefs-klaus-schwab-is-jewish/