Rosemary Theby's birth name is Rose Masing.
Rosemary Theby was born on April 8, 1892, in St. Louis, Missouri, USA.
Rosemary Theby died on November 10, 1973, in Los Angeles, California, USA of circulatory shock.
The cast of Housekeeping - 1916 includes: Harry Myers Rosemary Theby
The cast of Rusticating - 1917 includes: Harry Myers Rosemary Theby
The cast of A Romance of the Backwoods - 1915 includes: Harry Myers as Harry Brinsley Shaw as Shaw Rosemary Theby as Rosemary
The cast of Her Financial Frenzy - 1916 includes: Harry Myers Rosemary Theby
The cast of A Grain of Suspicion - 1916 includes: Harry Myers Rosemary Theby
The cast of Jumping Jealousy - 1917 includes: Harry Myers Rosemary Theby
The cast of A Persistent Wooing - 1916 includes: Harry Myers Rosemary Theby
The cast of The Lathered Truth - 1916 includes: Harry Myers Rosemary Theby
The cast of Their Installment Furniture - 1916 includes: Harry Myers Rosemary Theby