Muggle-born adults

[oh have faith]

No: HPFGUIDX 74952

This thought occurred to me in a discussion last night and I was 
interested to know what others thought;

Though there are plenty of students at Hogwarts who are muggle-born, 
or half-blood, there doesn't seem to be an *adult* character who is 
anything but pureblood.  The only exceptions I can think of is 
Nymphadora Tonks, who we learn in OOP is a half-blood with a muggle 
father, and Tom Riddle, who got a mundane muggle name to go with his 
muggle ancestory.  

Now admittedly, we don't know anything much at all about the 
background of most of the adult characters, but all their first names 
that we know- Severus, Minerva, Remus, Alastor, Rubeus, Cornelius, 
etc etc - are classical names in Latin or Greek which suggest a 
wizard ancestory.  Arthur Weasley, you might think, has muggle 
ancestory because of his very muggle name, but his delighted 
ignorance about all things muggle suggests he can't actually have had 
one for a parent, and Molly we know from OOP is a cousin of the 
Blacks, and so also pureblood. We know that Sirius and James were 
purebloods, and Pettigrew must be too to find so much favour with 
Voldemort, and Remus Lupin, name aside, was playing with were-wolves 
pre-school, suggesting a magical background.  Even Arabella Figg, 
despite being a squib, claims to have wizard parents.  I can't think 
of a single adult character, besides the two half-bloods, who have 
any name or habits or mannerisms that suggest they might be muggle 
born.  

This made me wonder if there might not be a reason for this.  Were 
huge numbers of muggle-borns killed or frightened back into hiding in 
the muggle world by Voldemort, leaving the wizard world with a 
shortage?  Is prejudice so entrenched in wizarding society that it's 
hard to get a job without a Name?  Do muggle-borns just tend to drift 
back into muggle society and find jobs there?  Do they tend to take 
new names and forge new habits to blend in?  

Of course, the name might not mean a thing; Hermione has a lovely   
classical name, after all, with two muggle parents (Contrary to some 
perceptions, Hermione is not a common name in modern Britain at all; 
JKR says she got it from Shakespeare.  Shakespeare probably got it 
from Greek mythology; Helen of Troy's daughter was named Hermione).  
Maybe some of the people I listed did have muggle parents, albiet 
ones with a romantic taste in names!  But it did strike me as odd, 
this lack of muggle-born adults.

Any thoughts?  

Faith's Girl