I am interested in the Easum family, which may have roots in Northamptonshire and may be related to your Essoms. I have not found evidence other than family lore and amateur linguistics to link "Easum" to "Isham", Pytchley, Lamport Hall, etc. Unless someone comes through with good parish records, I doubt a clear link will be found. I don't really care about that, anyway. The name itself is, to me,at least, more interesting than phantom links to a more exalted past. I have been doing some amateur linguistics of my own and now suspect that "Easum" and "Isham" might derive from the same elements while referring to altogether seperate origins. Indeed, if the common source of the first element the names was derived from the Indo-European word for "water", and the second from another for settlement from which comes the cognate "home",we might find many, perhaps many dozens of places with the name which were too small to have been recorded in parish registers or maps. Several rivers retain in their modern names traces of this common root: the Exe, the Ise, the Ouse. Cognates are not difficult to think of: "otter", "water",(Gr.) hudor< "hydrant", etc. I would like to hear from anyone who has encountered treatments thoroughly researched and supported by qualified linguists on these and other, possibly related, place- and family-names.