In BBC’s Sherlock, what is the name of John Watson’s wife?

In BBC’s Sherlock, John Watson’s wife is Mary Morstan.

Mary is introduced in the third series as John’s fiancée and later wife. Amanda Abbington plays the character, who is presented as a former intelligence operative with an unusually capable and secretive past. Her identity connects the modern television story to Arthur Conan Doyle’s original Sherlock Holmes fiction, where Mary Morstan is introduced in The Sign of the Four.

The BBC series gives Mary a substantially expanded role compared with her relatively brief appearance in the original Holmes stories. Her wedding to John is central to the episode “The Sign of Three,” while “His Last Vow” reveals more about her background. A common mix-up is to confuse Mary with Irene Adler, another major woman in Sherlock’s world, or Molly Hooper, the forensic pathologist who works with Sherlock.