I am researching some of my Jackson ancestors originally from Ashton under Lyne (England) who migrated to New Bedford.
I think the Amelia (Jackson)Jarvis that you mention was an older sister of my great grandmother Laura Jackson. Other siblings were Mary, Bertha and Frank. Their mother was Sarah Jane Jackson (nee Taylor) and father Frank Jackson.
I recently found a Sarah J Jackson living with Harry, Amelia, Elsie and Marian Jarvis (wrongly transcribed as 'Jamis')on the 1940 census. I would be very interested to find out if this family is linked to my family research in Ashton under Lyne.