In this case, Hisakaze SHIMAZU's official title was not "land steward of Kaseda and Izumi Villages" but "land steward of Kaseda Village, who was also in charge of Izumi Village" (sometimes also called "sashihiki" (person in charge)).
なお、この場合、島津久風は『加世田郷地頭兼出水郷地頭』ではなく、『加世田郷地頭及び出水郷預かり（『差引』と表記される場合も）』となる。