He was born at Albano, near Rome, to a Tyrolean father and Italian mother.

His mother, Agnesina Auda, was a well-to-do Roman woman.

The art critic Luigi Chirtani, when the painting was displayed at the Mostra Nazionale di Venezia, described it as "[b]eautiful, flattering, pretty, caressed, cleaned, polished, laundress in a painting by Mr. Blaas, the favorite portraitist of great Venetian aristocrats, dressed in gala satins, shining jewelry, hairstyles of the rich.

"[1] His colorful and rather theatrical period images of Venetian society, e.g. On the Balcony (1877; Private Collection), were quite different compared to delicate pastels and etchings of the courtyards, balcony and canals of modern Venice.

Eugene de Blaas' paintings were exhibited at the Royal Academy, Fine Art Society, New Gallery and Arthur Tooth and Sons Gallery in London, and also at the Walker Art Gallery in Liverpool.