Jane Short Antiques has dated this piece to the Before 1700 period.
However, it could possibly be Johann Ludwig, Prince of Nassau-Hadamar (1590-1653) whose image is known from a portrait of him in the Lobkowicz collection in the Czech Republic, as his granddaughter Klaudia Franziska of Nassau-Hadamar married the 3rd Prince Lobkowicz.

The Lobkowicz family returned to Prague from USA in 1989 where they were granted restitution on their palace which dates back to the 14th century. They now welcome visitors there. We lived in Prague for 5 years and speaking from personal experience a visit to the Lobcowicz palace is worthwhile and fascinating .
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Jane Short Antiques has dated this piece to the Before 1700 period.
30 years of expertise in 17th- to early 20th-century furniture and fine art
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