BLORES....it was used as an 'anagram word', MI5....go figure:

https://en.wiktionary.org/wiki/blores

Bolers, Bolser, Borels, Bosler, Robels, lesbro, robles

hmmmm....something to do with 'rob' then?....the rob-els?

https://en.wiktionary.org/wiki/Robel#English

According to the 2010 United States Census, Robel is the 29822^nd most common surname in the United States, belonging to 788 individuals. Robel is most common among White (86.04%) individuals.