next of kin:
(plural: the same ‘next of kin‘; also ‘kith and kin’, but ‘kith and kin’ includes not only the close relatives but also all the relatives and acquaintance of a person)
a person or persons very closely related to another person;
a close relative or relatives who can legally come into the property and money of a dead person,
Most of US President Obama’s next of kin are in Kenya.
As they could not reach a compromise, the next of kin of the rich industrialist went to a court of law for settlement of the property sharing issue.
Whenever there is some emergency, a person’s next of kin are to be informed immediately, and to facilitate the enquiry officers concerned, some employers make it compulsory for their employees to fill in the particulars of their next of kin in their job applications.

