I have been in contact with Mr. Lague from Oroville museum where they are doing research on Plaskett. I have sent him by snail mail what I have done so far. Are you related to him? I am not sure that William Wadsworth is my ancestor from Yuba County. That is where we seem to go separate paths. There seems that maybe there are 2 Willliams there in the 1849/1851 gold rush period. I have never, nor has my mother in law, heard any talk of a military career of any kind about our William Lucas Plaskett who married Sarah Barnes so I am researching to try and separate them into 2 families if I can. I have information on Plasketts that I have gathered that are not in my direct line and would like to see where they fit. I am trying to find some time to go down to talk to him, I live about an hour away. Please email me if you want to try and figure this out together.