Examines the distribution of place-names in northern Britain which contain elements defined as P-Celtic. Appendix 1: Survey of place-name elements organized according to their degree of Pictishness (Category 1: P-Celtic words probably not borrowed into Gaelic: *aber or *abbor, *bren or *brun, *cēt, *cuper, *dol, *eclēs, *lanerc, *mig, *ogel, *pant, *pen, *pert, *pevr, *pren, ?*roth, *traus/*tros, Note on *nemed; Category 2: P-Celtic words borrowed into Gaelic but only attested in place-names: *cair, *carden, *gronn; Category 3: P-Celtic loan-words attested as common nouns in Gaelic: bad, dail, monadh, pett, pòr, preas; Category 4: Gaelic elements influenced by a Pictish cognate: ? beinn, blàr, càrn, dabhach, dùn, foithir, lios, ràth, srath); Appendix 2: The problem of Cardean; Appendix 3: A note on Keir; Appendix 4: Certain, probable or possible ‘Pictish’ names containing elements not discussed above.