[ 后代 of Brian W. Smith]

[to the [nth (generation)] generation]

 0━┳ Brian W. Smith &ca 1963 June Scutt ca 1942
   ┣━1━━ Neil Smith ca 1964
   ┗━2━━ Mark William Smith ca 1976

[total][:] 2 后代 (4 [persons] [with] [spouses])