[ 后代 of Alvin Smith]

[to the [nth (generation)] generation]

 0━┳ Alvin Smith & Hilda x
   ┣━1─┬ Brenda Marilyn Smith 1941 &1963 John Paul Morrison 1937
   ┃   ├─1━━ Joseph Derek Morrison 1964 & Kim Elizabeth Klaudi 1962
   ┃   └─2─┬ Sandra Elizabeth Morrison &2001 Craig Farnsworth
   ┃       └─1━━ Luke Gregory Farnsworth
   ┣━2── Patricia Smith
   ┣━3━━ Brian Smith
   ┗━4── Carol Smith

[total][:] 7 后代 (12 [persons] [with] [spouses])