The last record I have of Daniel Purdy - he was still living in Louth, Lincoln Ontario as of the 1861 Canadian Census. He was 23. However a clue may be that he was not listed in the 1881 census.
The only siblings that were known to go to the US were Benjamin who in the 1880 US census was in Saugatuck Tp., Allegan, Mich, and my GGMother Lavina who went to Cleveland Ohio in the late 1880's.
Cornelius Purdy's son William Carleton died in Seattle,Washingtonin 1942.
I don't know anything else about him, but found his picture on the web as a 30 year old in 1905.
Thank you again for discovering Elsie's parents. Since thenI have found both sides came from New Amsterdam going back to the original settlers there. An interesting fact is that the father was Cornelius Vanderbilt Johnson, and his younger 1st cousin was the famous Cornelius Vanderbilt .