Alfred David McAlpine British construction company founder (1881–1944) Parents Sir Robert McAlpine, 1st Baronet Agnes Hepburn Children Gladys Gwendoline McAlpine Ethel Mary McAlpine Alfred James McAlpine Siblings Malcolm McAlpine Emma McAlpine William Hepburn McAlpine Douglas McAlpine Sir Robert McAlpine, 2nd Baronet Ethel Mary McAlpine Agnes Hepburn McAlpine Roberta Ida Freeman McAlpine Mary Gibb McAlpine Granville Ramage McAlpine Partners Ethel May Williams