Why was Barbara Spear Webster mentioned on Murder She Wrote in Memory of?

Barbara Spear Webster was the mother of Angela Lansbury, the star of Murder, She Wrote. She was also a well-known actress in her own right.

The "In Memory of" dedication at the end of each episode was a common practice in television at the time, and it was often used to honor someone who had passed away recently.

Therefore, it's likely that Barbara Spear Webster was mentioned in memory of her passing, though the specific episode and date would need to be researched to confirm.