Was Martha Wasington's last name Custis before she was married?
In a way.
http://en.wikipedia.org/wiki/Martha_Washington
Her birth name was Dandridge; Custis was the name of her first husband; Washington was her name while she was the wife (and then widow) of George Washington.
To find the answer to this question, you can search for information about Martha Washington on the Internet, using websites like Wikipedia. By doing this, you can learn that Martha Washington's birth name was Dandridge, and her last name became Custis after marrying her first husband. Her last name then changed again to Washington when she married George Washington. So, to answer your question, Martha Washington's last name before she was married was Dandridge, not Custis.
