Richelieu

(A historical costume for the gentleman who doesn't care to expose his legs in tights!)

A robe of cardinal-red goods made in domino style and trimmed with ermine, and worn over a lace gown.  A red mitre is worn, and a scepter is carried.

Source:
Masquerade and Carnival.  New York: The Butterick Publishing Company, 1892.

A description and illustration of a domino-style robe were recently posted; the men's version would be similar to the women's as illustrated.

As may be seen in the painting at left, Armand Jean du Plessis,
Cardinal de Richelieu (1585-1642) doesn't seem to have actually worn either a lace gown or a mitre, though at least some 19th-century cardinals had much lacier apparel.