Quick BTW. As for meanings of "bully", the Dictionary of Historical Slang has several definitions which could apply :-

1] A protector and exploiter of prostitutes, from c. 1690; colloquial until 1750, then Standard English.
2] Companion, mate, from c. 1820. Nautical and dialect.
3] adj. First-rate, splendid: Canada, Australia, New Zealand from c. 1860, ex US. From the late 17-18th century Standard English "bully" - worthy, admirable. Applied only to persons.