A Yankee Princess is a 1919 American silent comedy-drama film produced and distributed by the Vitagraph Company of America.

[4][5] Poor inventor Michael O'Reilly (Pearce) is an immigrant from Ireland living in the United States.

Lord Windbourne (Wetherby) himself appears and becomes engaged to Patsy, with the intention of reclaiming his treasures and her fortune.

When she learns his true character, she breaks the engagement, but Windbourne threatens to reveal the O'Reillys' deception.

Handsome young Irishman Larry Burke (Gordon) appears with proof that he is the real Lord Windbourne.