Sarah Margaret Armour Robertson ( 1891 - 1948 ) was a Canadian painter. Sarah Margaret Armour Robertson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2352.94 USD for HOLLY HOCKS in 2004 to 34802.78 USD for MOTHER HOUSE - NUNS OF THE CONGREGATION AND PUMPKINS ( ALSO KNOWN AS IN THE GARDEN OF THE MOTHER HOUSE - ST. LUKE STREET)