The voluminous Blechynden diaries, in the British Library, offer incomparable opportunities for studying (among other things) domestic life among middle-level British residents of Calcutta around the start of the nineteenth century. This paper is concerned with a small part of the history of the Blechynden household, focusing on Arthur Blechynden, son of Richard and his successor as superintendent of roads. Richard's diary runs to more than 70 volumes and Arthur's to seven. These sources permit none of the structural analysis that was made the basis of family history by Peter Laslett and others; but they touch several points of the richer canvas painted by Laurence Stone, and those genres that are concerned with individual lives, with emotion, with relationships, and with identity, the kinds of subject approached by the contributors to Roy Porter's collection Rewriting the Self. In this paper some of these issues will be taken up, with particular reference to ideas of individuality and of race. That discussion will then lead on to another, on the construction of British imperial identity outside Britain and in the context of the formation of empire, an aspect that seems worthy of more attention than it has received.