Euphemia Potter

Mrs. Potter was pure-blood witch. She was married to Mr. Potter, with whom she had one son, James.

Biography
Mrs. Potter and her husband did not become parents until later in their lives. This means that Mrs. Potter was probably in her forties when she gave birth to son James on March 27, 1960. As such, James was an only child, and was doted on quite a lot.

When James' friend, Sirius Black, ran away from home at age 16, he found refuge in the Potter household. Mrs. Potter and her husband came to regard Sirius as something of a second son. After Sirius moved into his own apartment, he kept in touch with the Potters, and was always welcome to have lunch with them on Sunday.

Mrs. Potter and her husband both succumbed to a fatal wizarding illness. They were elderly at the time, suggesting they might have contracted dragon pox, which is known to be especially dangerous for older wizards.

Their deaths occured at some point between when they took in Sirius and the night of October 31, 1981. On that fateful Halloween, James and his wife Lily were murdered by Voldemort, and their son Harry was sent to live with only surviving relatives.

In all likelihood, Mrs. Potter never got a chance to meet her grandson, but she was probably among the relatives who Harry saw when he looked into the Mirror of Erised.

Behind the scenes

 * The Charlus Potter and Dorea Black who appeared on the Black family tree have been presumed to be James' parents. The couple had one child, a son, whose name has not been revealed. If Dorea was in fact James' mother, she would have been 40 when he was born, which seems to align with J.K. Rowling's revelation about the age of James' parents. However, Dorea died at 57, which conflicts with Rowling's statement that James' mother was "old in wizarding terms" when she died.

Appearances

 * Harry Potter and the Order of the Phoenix