My Whitcomb ancestors were in Canada for a time. I have some information, but I still need a lot more hard evidence. Here is the picture that I have put together.
New Hampshire VRs record an Ephraim Whitcomb, b 1 July 1774 in Henniker, NH, son of Reuben Whitcomb. Reuben and family moved from Henniker to Washington, Orange Co, VT, at some point after 1774. It seems that Levi Whitcomb and Lucy Whitcomb were born in VT, suggesting that the move was before 1779. Julia Stockwell has evidence of the marriage of Ephraim Whitcomb to Sally Goodrich on 25 Oct 1799 in Orange, VT. The 1800 census for Washington, Orange Co, VT, shows a childless couple with Ephraim Whitcomb as head of household. The age ranges for the couple are consistent with Ephraim Whitcomb and Sally (Sarah) Goodrich, so I feel pretty confident that this identification is correct.
Next there is an Ephraim Whitcomb,age 40-59y, enumerated with his family in the 1825 census for Farnham, Dist of Bedford, QUE. This listing is consistent with the Ephraim Whitcomb from VT, who would have turned 51 in 1825.
The foregoing is what I have been able to put together from internet sources about Ephraim Whitcomb. I can add to that the genealogy of my Whitcomb ancestors that I have inherited by way of my uncle Erwin Whitcomb. The archive of documentslists my great-grandfather as Ephraim Whitcomb, b. 19 Sep 1845 or 1846 (ambiguity yet to be straightened out), Oceola, Livingston Co, MI; d. 21 Jul 1935, Millington, MI. This Ephraim's father also was Ephraim Whitcomb. My archive contains an obituary in which he was reported to have been born in 1817 in Rosemere, Terrebonne Co, QUE, and died 21 March 1885. Unfortunately, the situation is a little "messy" since an online transcription of MI deaths gives the date of death as 21 March 1884 (I will explain later the evidence that convinces me that 1885 is correct). There are several mistakes in the online death record, such as that the person is listed as a female named "Ephraina Whitcomb." However, the particulars leave no doubt that this is my gggrandfather. The death record provides two additional pieces of information of vital importance: 1) that this Ephraim's father also was named Ephraim Whitcomb, and 2) that his father was born in NH.
I know that this is confusing because there were 3 Ephraim Whitcombs in succession. At least that is the consistent picture that has emerged in my analysis. The documents that I inherited from my uncle contain an old unidentified fragment of a paper headed with the names Ephraim and Sarah Goodriz. (It would be an incredible coincidence if this is not Ephraim Whitcomb and Sally Sarah Goodrich). Then there are listed nine people by first name together with what are apparently spouses. This list fits very well into a framework that can be generated from online genealogies of various members of the Whitcomb line.
Thus, taking all of these components together, I strongly suspect that my known ancestor Ephraim Whitcomb, b. 17 Aug 1817 in Rosemere, QUE, was the son of Ephraim Whitcomb, b. 1 July 1774 in Henniker, NH.
Again I must leave the details of the analysis for a later time, but one of the siblings of my gggrandfather Ephraim was Aaron (or Arron) Whitcomb, born 6 April 1808 in VT. His birth in VT coupled with the fact that I cannot find Ephraim Whitcomb in Orange Co, VT, in the 1810 census suggests that the family moved to QUE at some point between April 1808 and 1810.
My gggrandfather's obituary also states that he went to NY for 2 years when he was 18 and then went to Whitby, ONT, where he married my gggrandmother Sarah Marsh Conger in 1839. His time in NY would thus have been about 1835-1837. I do not know if other family members, including possibly his parents, might have also gone to NY at this time.
I have given a sort of thumbnail sketch that lacks many details and does not list the sources, which are vital to establish things. But I hope it will give you a picture of my (suspected) ancestral line and their connection to QUE. As I mentioned, Ephraim Whitcomb was born in 1774 in Henniker. Although hard evidence is needed, one of his younger brothers seems to have been Darius, b. in about 1789 in VT. Darius lived in Orange Co in 1820 and seems to have moved to Chittenden Co by 1850. Darius and his wife had a son named Rufus P Whitcomb, b. 15 Aug 1813 in Washington, Orange Co, VT. Rufus P then shows up on the 1851 census for Dist 2, Dunham, Missisquoi Co, Que, CAN. That is the extent of my info about him at this time.
I hope to hear from you to try to fill in a lot of blanks and to share the sources that might be available. I have been procrastinating getting the documents in the archive that I inherited scanned, but I will do it as soon as possible.