Sorry, I couldn't resist the pull of the R.O.U.S. :-)
But really, that's what the original spelling looks like upon first read (and some continued readings). I understand the appeal of the sound, though, which is why I don't mind the spelling Monserrat, dropping that first 't'.
Please rate my personal short name lists (the latter includes combos):
www.behindthename.com/pnl/69381www.behindthename.com/pnl/69381/91835 (updated)
http://greens-end.myminicity.com/