Re: Any Perreaus in Asia?
The Perreau's are an early family in Singapore, one of the many Eurasian civil servants that came across from Bencoolen to Singapore on the founding of Singapore and handing back of Bencoolen to the Dutch. Other Eurasian families include Angus, Holloway, Leicester, Lewis, Siddons, etc.
A useful website to look at is
Once you're in the site, double click on 7. Christening
-> you'll find 6 Perreau's including a Montagu Wm.
Double click on 10. List of Civil Servants .... 1803
-> 1777 - R. S. Perreau - Secretary, Linguist, Senior Merchant.
There are early records of Perreau's in Singapore. It takes time. I have yet to come across documents that link your family to the early Perreau's, but it's out there.