Grandmother and Child

Gaetano Bellei (Italian, 1857-1922)
Grandmother and Child
25¾ x 17½ in. (65.4 x 44.4 cm.)

Zurbaran

The Childhood of the Virgin Mary, Hermitage Museum, St Petersburg.
Francisco de Zurbarán (1598-1664) Spanish.

Mother of the Arts

Pompeo Batoni (1708 –1787), Mercury Crowning Philosophy Mother of the Arts.
Hermitage Museum, St Petersburg.

The Black Madonna of Czestachova

This appears to be a 19th century version of the famous icon.
Thanks to Barbara from stille linde for reminding me of this wonderful image.

St Catherine

Simon Vouet

Olga Suvorova

Adrian Gottlieb