Robyne, Yes, the spelling changed. There is plenty on the Dake forum to document from John Deake/Dake and Mary Ann "Polly" Allen on back, that's why I stopped there. I have focused on sorting out the Dakes in Ontario and Michigan for the last couple of years. Supposedly about 1811 is when the family "Americanized" the name. I have a copy of the petition that Thomas filed with the Saratoga County New York Surrogate's Court in 1811 at age 19 asking for his uncle to be named his guardian until he reached age 21. In this document, he spells his name DAKE but signed it DEAKE at the end. The same appears on his younger brother's petition filed the same day in March 1811.
You are correct about Hiram Edmund. I found this on the Ontario Cemetery Finding Index. So it would appear that Hiram Edmund is a commonly recurring name in that line. There are many Dakes today in Western Ontario and I am certain that MOST are related and probably descended from Thomas. There is another line that were 3rd cousins of his in the Oxford County area.When my 3rd great grandfather, John, moved to Michigan in 1868, 5 of the 7 children from his first marriage remained in Ontario and I assume that many of today's Dakes are their descendants. I am uncertain if any off Hiram's sons had children. I know of only two sons and they both died in infancy. His daughter's had children and some of their descendants live in Lambton County in the Oil Springs area.