One might have been inclined to start this thread of discussion under the existing topic of Servants, Retainers, Friends,
but considering the rank, responsibilities and personal achievements of the people who held these positions, the topic of Noble Families seemed more appropriate to me.
The Court Dress of a Freilein or in English, a Maiden-in-Waitng to the Empress. Note the Chifre and Bow (upper right) that denotes a lady of the Empress' entourage, circa 1870.
A Kamer-Junker (Equerry) and a Kamer-Padj (Page), circa 1880.
Kammerger (Chamberlin) and a Senator, circa 1880.
Shtalmeister (Master of the Horse), circa end of the 19th century.
All of the above illustrations are from the book Dvoryanskie Rody Rossiiskoi Imperii, Tom Pervyi, Knyazya
(Noble Houses of the Russian Empire, First Volume, Princes). Grebelsky & Dumin, 1993