Patrick Vincent Duffy ( 1836 - 1909 ) was an Irish painter. Patrick Vincent Duffy s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 924.14 USD for Sketch at Multyfarnham in 2005 to 3222.63 USD for 'Meeting of the Waters', Vale of Avoca in 2016 , based on the size and medium of the artwork.