Willem Coymans by Frans Hals https://www.nga.gov/artworks/76-willem-coymans
The crest bearing three cows’ heads, visible on the wall behind the sitter, indicates that this young man is a member of the prosperous Coymans family of Haarlem. The cows’ heads refer directly to the Dutch family name, which translates as „cow man.“ Archival and genealogical information, combined with the Latin inscription „AETA SVAE.22 / 1645“ below the shield, identifies the sitter as Willem Coymans, who was twenty-two years old in 1645.
Gallery of Art, Washington (undated, 1960s): 20, as Balthasar Coymans. 1963 Beeren