Ichabod was born in 1769 at Stonington CT, lived in Stephentown, Albany (now Renselaer)Co. NY, before moving to Alburgh VT by 27 Jun 1777, when their first child was born. The date for their marriage is an estimate based on this child's birth date.It is doubtful Ichabod would have gone from NY to RI connect with Anna Kenyon even if she was born there which she probably was. It's more likely they married in Stephentown or Alburg.
There were many Kenyon famlies at Voluntown CT in 1790 from RI who were closely related, probably sons or grandsons of Sylvester & Anna (Barber) Kenyon. Azariah & Giles Kenyon, Jr were later at Hinesburg VT. The wife of Azariah may have been a dau of Wm (b 1731)& Hannah (Niles)Kenyon who were at Stephentown in 1790. Wm died in 1800 at Argle, Washington Co., NY. Wm's will doesn't mention a dau Anna Kenyon, so it appears she wasn't from that particular Kenyon family.
I don't know where Azariah and Giles [Jr.] were in the years between 1790 in CT and 1830 in VT. Some families did live across the border in Canada. They went back and forth. My guess is that Anna was as sister of Azariah & Giles and traveled with them.
Freeman Kenyon was one of the Kenyon at Voluntown in 1790 and a brother of Azariah & Giles, all sons of Giles & Priscilla (Briggs) Kenyon, Sr. Also, a John and Samuel Kenyon but I don't know their connection to Giles.