Edward's father was Barack, his grandfather was Roswell. I have conflicting information regarding Roswell's father. I am not particularly interested in his ancestry but in the spelling of the name of one of his two daughters--whether it was Madelin or Madeline. I suspect Beckwith named the Madelin Plains in northeastern California after his daughter. I am also hoping to find additional photos of Edward. I know of only one as an older man in his uniform.
I am sure you will recognize that Edward Beckwith was not James Beckwourth (after whom a pass was named). These two have been confused for years, which has contributed to making Beckwith's work unjustly obscure. I hope to correct that some.
Thank you for your interest. Feel free to contact me directly at firstname.lastname@example.org