The alchemist may even die as a result of the odors and fumes along with the incessant labor and protracted toll by day and by night. pg 355
Daily Halacha
One who wants to daven on behalf of someone but does not know the mother's name should use the father's name instead. If the father's name is also unknown, then the family surname should be mentioned. A mother who davens on behalf of her child should not mention her own name instead, she should say only "my son/daughter" followed by the child's name.