Thurtell and Related Families

 This picture is from the collection of RobRoy McGregor. The lady is identified as "Mrs. A. Thurtell" in the handwriting of Julia Mary (Mate) Snow Thurtell. She is standing in front of the house belonging to Henry and Mate Snow Thurtell at 1217 Delafield Place, NW, Washington, DC.
The picture was probably taken sometime in 1916 based on the date on the picture.

Can you identify this lady?

 This lady is identified as "his mother" and is from the collection of Charlotte Mackie. The picture was probably taken before 1900. Can you identify this lady?