There is either a transcription error on his first initial and the spelling of Alan, or I copied it incorrectly from this source. See the Genweb source for a transcription based upon a photo of the grave marker.
1429- LOUGHEED, James (1834 - 1880) his wife, Margaret Jane GALLOWAY (1841 - 1913) Creighton J. LOUGHEED (1879 - 1964) his wife, Myrtle L. WHITE (1889 - 1979) M. Allan Lougheed (1922 - 1989) husband of M. Rose CONNORS