Interactive tree of Ralph Logan

David J. Blackett –

Frederick Herbert Blackett 1914–1997

Mary Watson 1914–1982

Matthew Stanley Blackett 1917–1989

William Logan Blackett 1924–2013

Catherine Lilian Kirk 1925–2002

Mary Logan 1888–1972

Matthew Henry Blackett 1881–1960

Ralph Logan 1858–1934

Isabella Hinson 1860–1929