As Inspector General of the Maritime Customs Service, Robert Hart (1835–1911), born in County Armagh in Ireland, was a chief fiscal administrator of the Chinese Empire. Hart was a British citizen, yet he was employed by the Chinese government and was responsible for hundreds of Western (mostly British) and thousands of Chinese employees. His ability to straddle cultures has been noted by the historians Bruner, Fairbank and Smith who refer to a trait of cultural sensitivity that was unusual among the merchants of the treaty ports in China. The source of this cultural sensitivity is of interest and some insights can be gleaned from his Irish origins. The employment under Hart of many persons from Ireland, family and others, in the Chinese Maritime Customs (CMC) has also raised questions about nepotism and favouritism. We will see that Hart did not only favour his family but was generally well disposed to long-standing acquaintances, whether they were Irish or not. Furthermore, his Irish contacts in both Ireland and China were of advantage to him in his career and his attainment of higher social status. Our examination of Hart's network of Irish contacts and his ideas about Ireland also reveal his multi-national identity. This seemed to allow Hart to be both pro-British while also retaining a critical perspective, as might be expected by someone who by place of birth, social class and religion was not from the heart of the English establishment.