up to the 12th generation
0━┳
John Horlock † & ------ ------ †
┗━1━┳
Arthur Horlock 1881-1964 &1907 Caroline Scutt 1881-1964
┣━1─┬
Phyllis M. J. Horlock 1910- &ca 1928 Leonard Gordon Searle ca 1904-
┃ ├─1━━
Reginald Searle ca 1928
┃ ├─2━━
Geoffrey Searle 1930
┃ ├─3━━
Derek Searle 1932
┃ └─4━━
Leonard Searle 1942
┣━2━━
James Horlock 1912
┣━3─┬
Mary A. Horlock ca 1913- &ca 1938 Charles E. D. Bristow †
┃ └─1━━
David Bristow
┗━4━━
Reginald A. Horlock ca 1928-ca 1929
Total: 10 descendants (15 individuals with spouses)