+ Mary ? (b. 1814) ↑
   + William Lyford (b. 1850) ↑
   + Alexander William Yetman (b. 1886) ↑
   + William Clarence Dawe (b. 1913) ↑
   + Robert James (Bob) Briggs ↑
   - Paul Prevost ↑
   + Robert Milo Billyard ↑
   + spouse
   - Denise Whaley ↑
   + Alec Randy (Randy) Grabowski ↑
   + Laura Goobie ↑
Legend:
A number prefix represents generation number.
Dotted lines indicate adoptive or step relations.
Names in parenthesis are either aliases or names commonly associated with person
Last updated 4 May 2025 by Andrew Billyard
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