There's a really interesting and, I think (or rather, Irina Metzler thinks), unique reference in records from Oxford in the mid-15th century. It's a decree granting two students of "exceptionally small stature" permission to take final oral exams in private rather than public "because of the embarrassment occasioned by their diminutive height." Significantly, there isn't any nearby reference to dwarfs, very short people, or similar, which seems to indicate it would only be noted in (this set of) records when a person's size became an issue. There's no drama about admitting them to the university or about them graduating or anything. And it opens the door to the possibility of unmarked students with disabilities, because there was no reason to make a note of it.
This is relevant here because medieval universities trained the bureaucracies of the late Middle Ages (civic, royal, ecclesiastical). We don't have more information about the subsequent careers of these specific little people, but you didn't go to university for no reason.
So despite references in some legal-normative texts like the Sachenspiegel that equate dwarfism with cognitive disability from a legal perspective--the text bans dwarfs from inheriting property or titles on those grounds--it's apparent that in practice, a well-placed and fairly intelligent little person could be, if not a Tyrion Lannister in Dany's entourage, a trusted "white-collar worker."
Apologies because this is not exactly addressing the specific era and location in your question, but it is somewhat related--Moctezuma II (aka 'Montezuma'), who ruled the Mexica empire in Central Mexico in the late 1400s and early 1500s, kept a troupe of dwarves, hunchbacks, albino people, and others with physical deformities, in his court. Different sources give different impressions of how highly Moctezuma regarded these people. They were reportedly present at Moctezuma's meals to serve and to entertain him, which sounds debasing but would in fact have been an incredibly high honor, as Moctezuma was viewed as a deity and was attended only by those of noble standing and high birth.
Bernal Diaz, one of Cortes' officers during the initial invasion of Tenochtitlan, describes these dwarfs, hunchbacks, etc, being kept in a 'zoo' and cared for along with Moctezuma's other animals, of which there were many, and many buildings and employees were dedicated to their housing and care. This may sound inhumane, but in reality, these individuals had their own rooms and were quite well cared-for and comfortable. One of the most highly regarded displays of wealth in Moctuezuma's empire was the competent care of others--keeping many family members, wives, artists, musicians, performers, personal magicians, and so on, fed and cared for required massive wealth, and was an obvious status symbol without being seen as ostentatious. It would have been considered a point of shame if Moctezuma's troupe of physically deformed performers were not fully cared for.
In general, dwarfism and other physical deformities were not seen as points of shame in pre-Columbian Mexico, but as connections to the magical world. Moctezuma was an extremely avid believer and practitioner of magic, and would have regarded any individual with magical properties to their character with great interest, respect, and veneration.
Sources include: Daily Life of the Aztecs on the Eve of the Spanish Conquest by Jacques Soustelle, The Aztecs by Michael E. Smith, The Conquest of New Spain by Bernal Diaz del Castillo, The Gods and Symbols of Ancient Mexico and the Maya by Mary Miller.
Not a historian but had to address your statement that a person "suffers from dwarfism." The appropriate (and modern) usage is person with dwarfism or dwarf. Using the term "suffering from" implies a judgment about the condition you are discussing.
Very good question. There is a related case that's been well-researched, not on a dwarf but for a man with hypertrichosis (condition where the whole body is covered in hair) who was sent to the French court in the mid-16th century, where he would have been kept as the same kind of 'oddity' as dwarves often were at early modern courts. Merry Wiesner Hanks's book 'The Marvelous Hairy Girls' deals with the case. His position is ambiguous, but he did marry into a wealthy family which means he had a pretty high status. There's also the dwarf Nano Morgante at the Medici court, which I don't think has been much researched: https://extraneusart.wordpress.com/2014/01/28/nano-morgante-court-dwarf-of-the-medici/