First lady in the context of "First Lady of the United States"

Begum (also Begüm, Bagum, Begom, Begam, Baigum or Beygum) is an honorific title from Central and South Asia, often used by leading women in society, including royals, aristocrats, first ladies and prime ministers. It is the feminine equivalent of the title baig or bey, which in Turkic languages means "higher official". It usually refers to the wife or daughter of a beg. The related form begzada (daughter of a beg) also occurs.

In the Indian subcontinent, particularly in Delhi, Hyderabad, Sindh, Punjab, Khyber Pakhtunkhwa and Bengal, begum has been adapted for use as an honorific for Muslim women of high social status, accomplishment, or rank, as in English language the title "Lady" or "Dame" is used.

Lois Irene Marshall (née Kimsey; May 9, 1873 – January 6, 1958) was the wife of Thomas R. Marshall, the 28th vice president of the United States. During her husband's tenure she held the unofficial position of the second lady of the United States from 1913 to 1921. She served also as first lady of Indiana during her husband's Governorship (1909–1913).

Second lady and second gentleman are honorary titles often used in reference to the spouse of a vice president, or spouse of a lieutenant governor or other second-ranked government official. The title is styled after first lady or first gentleman, which are used to describe the spouse of a president or governor. In discussing both spouses, they may be referred to as the second couple, and if they have children, they are known collectively as the second family.

The expression "second lady in the land" has also been used to refer to the second-highest ranking female in a monarchy, such as a crown princess if there is a queen.