| i. | John Mason. Born Edmonton, Alberta, Canada, on 25 Sep 1913. Died Boston, Mass., on 3 Mar 1925. Data from Mason. |
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| ii. | Richard Seward. Born Boston, Mass., on 11 Apr 1919. Data from Mason. In 1926 he was adopted by his step-father and his name changed to Richard Mason Whidden. |
| i. | Richard Seward (Adopted). Born Boston, Mass., on 11 Apr 1919. Data from Mason. In 1926 he was adopted by his step-father and his name changed to Richard Mason Whidden. |
| i. | William Mason. Born Brookline, Mass., on 26 Aug 1918. Data from Mason. |
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| ii. | Barbara. Born Brookline, Mass., on 25 Oct 1922. Data from Mason. |