Peter Davidson Robertson
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- 1 Peter Davidson Robertson
- Mary Biggar
- 2 Grace Biggar Robertson b. 16 Jan 1873 d. 3 Nov 1906
- + Archibald Carmichael b. 15 Dec 1871 d. 24 Dec 1942
- + Archibald Carmichael b. 15 Dec 1871 d. 24 Dec 1942
- 2 Grace Biggar Robertson