I am searching for information about a Jewish physician HOSENSTEIN from the Netherlands who went to Russia around 1822 or 1842 to help with an outbreak of Diptheria. We know he married a woman >from Lyubar and the family name was changed to ROSENSTEIN. Also, seeking information about BARISH >from Lyubar, SHIFREN >from Borisov, MILLMAN >from Zhitomir. Any help would be appreciated.