name the office holder with associate as sir charles clifford and has a kid named william fitzherbert ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_associate dbr_Sir_Charles_Clifford,_1st_Baronet sep_dot var_uri dbo_child dbr_William_Fitzherbert_ attr_open mayor attr_close sep_dot var_uri a dbo_OfficeHolder brack_close