Bess Houdini with her mother, Balbina Rahner, and mother-in-law, Cecelia Weiss, in 1909. The Houdinis took their mothers to Europe that year. By all accounts the two moms, who were both German-speaking widows with seven children, got along extremely well.
Happy Mother's Day.
Photo from Houdini His Legend and His Magic by Doug Henning.