Well a quick search shows several woman with this name
Rosamind
Julius http://www.rca.ac.uk/pages/study/college_honours_634.html
Rosamind Pike
http://www.weekinrewind.com/Reviews/m-p/PridePrejudice.htm
S , Rosamind Praegar
http://www.childrensbooksonline.org/Wee_Tony/index.htm
Rosamind Illing
http://www.bbc.co.uk/radio3/euroclassicnotturno/playlist060214.shtml
Rosamind B. Spicer
http://digital.library.arizona.edu/jsw/3401/
And many more as well as a few Roselind's
So I would say that yes they are actual names though I am uncertain of their meaning a form of
Rosamund Rosamond Rosmund prehapes
Edited to add I love
Rosamund and
Rosalind but I am uncertain about Rosamind / Rosemind,
This message was edited 5/9/2006, 1:16 PM