You asked me to do some digging into these re-emerged Roughnecks. This is the best that myself and the others you put on job were able to put together. I admit there’s a fair amount of speculation in filling in the gaps, but I think it’s solid enough.
Raymond’s Roughnecks were employed by the Word of Blake during the jihad. The unit was functionally destroyed in 3075 in combat with the Irregulars. Nina Raymond, the unit’s then commander, died in single combat with Annika Magyari. Colin Raymond, her older son, was captured; Bruce Raymond, her younger, survived and escaped with the rest of the command. From there we lose track of them, but conventional wisdom holds that they remained in the Word’s employ and were merged down into another command before being finally destroyed during operation SCOUR. (The MRBC’s claim that all the units that worked for the Word were destroyed has since been proven erroneous)