I suspect someone has confused a MI with a burial reg entry - not the same thing - the relevant MI (Malew Glebe yard LM. 21,22)reads:
In loving memory of / JOHN TAUBMAN / Mariner of Castletown / who died August 3rd 1927 [?CHK - looks wrong] / Aged 70 years / At Rest / Also / JOHN HENRY (HARRY) / beloved son of the above / who fell in action in France / Nov. 4th 1918, aged 29 years / "His duty nobly done" / Also ISABELLA ANN / beloved wife of the above John Taubman / who died Jan. 5th 1933 / Aged 75 years / Thy will be done / Also EDWARD, son of the above / who died in infancy, (Broken stone, part of same grave) In loving memory / of / JOHN TAUBMAN /of Castletown / who died July 31st 1891 / Aged 64 years / Also of JAMES, son of the above / who died November 9th 1872 /aged 18 years /Also of THOMAS, son of the above who was lost at sea October 1885 / Aged 18 years / Also of LETITIA Wife of / the above John Taubman / who died Dec. 26th 1902 / Aged 66 years / All is peaceful, bright and/clear /Deeply regretted/ Also HENRY, son of the above / and beloved husband of SARAH TAUBMAN / who died 14. July 1920 / Aged 39 years.