and uses of the title Mother of Mine, Any Friend of Nicholas Nickleby's is a Friend of Mine, and frequent uses of the title Friend of Mine a picture of the king's (that is, a picture owned by the king, as distinct from a picture of the king – a picture in which the king is portrayed) Some object to the name double genitive because the "of" clause is not a genitive. Alternative names are "oblique genitive", "post-genitive", "cumulative genitive", "pleonastic genitive", and "double possessive". Some writers have stigmatized this usage. However, it has a history in careful English. "Moreover, in some sentences the double genitive offers the only way to express what is meant. There is no substitute for it in a sentence such as That's the only friend of yours that I've ever met, since sentences such as That's your only friend that I've ever met and That's your only friend, whom I've ever met are not grammatical." Cf. "That's the only one of your friends that I've ever met" "[T]he construction is confined to human referents: compare a friend of the Gallery / no fault of the Gallery." The Oxford English Dictionary says that this usage was "Originally partitive, but subseq[uently became a] ... simple possessive ... or as equivalent to an appositive phrase ...". Subject complements When they are used as subject complements, as in this is mine and that pen is John's, the intended sense may be either that of a predicate pronoun or of a predicate adjective; however, their form (mine, yours, etc.) in this case is the same as that used in other sentences for possessive pronouns. Use of whose The following sentences illustrate the uses of whose: As the possessive of interrogative who: Whose pen is this? Whose do you prefer? For whose good are we doing it? As the possessive of relative who (normally only as determiner, not pronoun): There is the man whose pen we broke. She is the woman in whose garden we found you. As the possessive of relative which (again, normally only as determiner): It is an idea whose time has come (preferably to ...of which the time has come). Semantics Possessives, as well as their synonymous constructions with of, express a range of relationships that are not limited strictly to possession in the sense of ownership. Some discussion of such relationships can be found at Possession