Henry Edward Cusack Irish mechanical engineer (1865–1954) Parents Elizabeth Barker Ralph Cusack Children Constance Elizabeth Cusack Reginald Ernest Cusack Dorothy Alison Cusack Henry Vernon Cusack John Ralph Cusack Siblings Mary Alice Cusack Richard Charles Massey Cusack Ralph Smith Cusack James William Cusack Mary Cusack Elizabeth Frances Cusack Partners Constance Louisa Vernon