'Brother and Sister', late 18th-early 19th century, (1913).Artist: Adam Buck [Getty Images]

'Brother and Sister', late 18th-early 19th century, (1913). A print from The Connoisseur', (London, 1913). (Photo by The Print Collector/Print Collector/Getty Images) — see more

'Brother and Sister', late 18th-early 19th century, (1913). A print from The Connoisseur', (London, 1913). (Photo by The Print Collector/Print Collector/Getty Images)

Hulton Archive Print Collector