my $patron = Koha::Patrons->find($tables->{borrowers});

    my @guarantors;

    if ( $patron->guarantor_relationships->count ) {

            @guarantors = $patron->guarantor_relationships->guarantors;

    }

    my $guarantor = $guarantors[0];

    if ( $guarantor ) {

        $$tables{guarantor}=$guarantor->unblessed;

    } else {

        my ($firstname, $surname, $relationship) = $patron->non_patron_guarantor_info();

        $$tables{guarantor}->{firstname} = $firstname;

        $$tables{guarantor}->{surname} = $surname;

    }

=head3 non_patron_guarantor_info

Returns ($contactfirstname, $contactname, $relationship) of this patron's non-patron guarantor

=cut

sub non_patron_guarantor_info {

    my ($self) = @_;

    my $contactfirstname = $self->_result->contactfirstname;

    my $contactname = $self->_result->contactname;

    my $relationship = $self->_result->relationship;

    return ($contactfirstname, $contactname, $relationship);

}