+ Ellen Clark (b. 1861) ↑
   + Arthur Harry Threader (1879, bp. 1880-1925) ↑
   + Milo Henry Billyard (b. 1902) ↑
   + Gertrude Alexandra (Zandra) Crysler ↑
   - Margaret (Peg) Eberle ↑
   - John Parsons ↑
   + Cornelia (Neila) Rose ↑
   + Robertson (Rob) MacDonald ↑
   + Evelyn Kathleen (Billyard) Dawe ↑
   - Rhonda Gail Arsenault ↑
   + spouse unknown
   + Harvey Glen Mumby ↑
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 1 Nov 2023 by Andrew Billyard
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