My last name is Sifuentes de La Rosa, at times Rosas, due to my mothers' immigration process which converted De La Rosa into Rosas...anyway, my mother and father were born in Donato Guerra in 1935 and 1938 respectively. My dad always mentioned ONTIVEROS in his stories about 'el rancho' or 'el terre'...please tell me more about your ONTIVEROS side of the family and if you know or have heard of any SIFUENTES stories as you grew up.