Could this be him?
Found on familysearch.org
Regards,
Chris
William Henry Sedgwick
Canada Births and Baptisms, 1661-1959
birth: 06 Jun 1877 —Denbigh, Lennox & Addington, Ontario
residence: 1877 —Ontario, Canada
parents: Daniel Sedgwick, Eliza Jane Davison
record title: Canada Births and Baptisms, 1661-1959
name: William Henry Sedgwick
gender: Male
birth date: 06 Jun 1877
birthplace: Denbigh, Lennox & Addington, Ontario
name note: twin
father's name: Daniel Sedgwick
mother's name: Eliza Jane Davison
indexing project (batch) number: C01484-8
system origin: Canada-EASy
source film number: 1845212