1748, September - Grants made in The Prerogative Court of Court of Canterbury, London: Special limited probate of the will of Jospeh Austell of Boston, New England; Probate of will of William Grace, master of the merchant ship "Owen" who died in Boston, New England. (AW)
"Complete Book of Emigrants, Vol 3"
Peter Wilson Coldham, Genealogical Publishing Company
(AW) refers to the book "American Wills and Administrations in The Prerogative Court of Canterbury 1610 - 1857", Peter Wilson Coldham, Baltimore: Genealogical Publishing Co. 1989.
From that work, on page 13:
Austell, Joseph, of Boston, New England. Special limited probate to the cousin, Moses Austill, (Sep 1748)
Joseph Austel and Elizabeth Engersol
(int. reads Austell and Enggersell)
Married by Cotton Mather, Jan 19, 1721 Presn
"Boston Marriages, 1700 - 1809"
by Edward W. McGlenen, Genealogical Publishing Co., Inc., 1977.
Page 99.
These are the only references to Austill / Austells in Boston, or other parts of Massachusetts. This Joseph is likely the eldest son of Joseph Austill & wife Sarah who immigrated to Pennsylvania in 1699, but we have no conclusive evidence to prove such at present.