During the early l800's, a Russian emissary from the Czar, visited the
Presidio in San Francisco and fell in love with a daughter of one of
the officers.  Where might I find the history of this story?

Hello Cocoa-ga,


Thank you for this romantic question.


The story you are referring to is of Nicolaï Petróvich Rezánov,
Chamberlain to the Czar and Concepcion (Concha) Argüello, daughter of
the commandant of the Presidio.


You can read the history of this wonderful but sad love story here:
The book “California - Romantic and Resourceful” by John F. Davis
gives the story of Concepción de Argüello, and presents a poem by Bret
Harte about her.
Books about California History and Culture Website 
http://www.books-about-california.com/Pages/California_Romantic/California_Appendix_A.html


The poem by Bret Harte “Concepción De Argüello” (Presidio de San
Francisco, 1806.)
Books about California History and Culture Website 
http://www.books-about-california.com/Pages/California_Romantic/California_Appendix_B.html


In addition, here are many interesting historical illustrations
referring to this story.
Books about California History and Culture Website 
http://www.books-about-california.com/Pages/California_Romantic/California_Illustrations.html


The texts above belong to The Project Gutenberg Etext of California
Romantic and Resourceful by John F. Davis
http://www.veritel.com.br/gutenberg/etext03/8calr10.txt


Search criteria: ://www.google.com/search?q=history+Russian+Czar+daughter+San+Francisco+Presidio+1800+&hl=es&lr=&ie=UTF-8&sa=n&oq=history+Russian+Czar+daughter+San+Fransisco+Presidio+1800+


I hope this provides you with the information you are seeking.


Best regards,

Bobbie7-ga

This story inspired the creation of one of the most popular Russian
rock operas, "Yunona and Avos"; the only reference I could find to it
in English is on this site:

http://www.yunona.org/yunona.htm