Penelope Mary Brooks of 24 Garden Close, Shotley, Ipswich IP9 1LZ was able to kindly provide me with much information on the Silburn line.
Her letter went as follows:
...I've used church records and census data to compile it. The name appears as Silburn, Silbourne, Silborn and even Sibbons. I suppose a strong Suffolk accent and a cleryman or census enumerator from another part of the country would easily mix up the spelling.
According to the 1851 census Samuel was born in Hitcham around 1775. The Hitcham church records show no Samuel Sibourn baptised about then but there was a Samuel Severne.
I believe the Severne/Silburn names are the same; there is a similar naming pattern including Thomas and Samuel appearing in all generations and in the Suffolk dialect it is very easy for the two to sound the same."
From another researcher:
The Planter sailed from London about Apr. 10, 1635, and arrived in Boston,
Mass., June 7, 1635. Francis Peabody, a farmer and miller, settled first at
Ipswich, Essex County, Massachusetts, where he was living in 1636 near
“Labour in Vaine” on a road that led to the beach. The first reference to
Francis in the Ipswich records appears in a description of lands owned by
Samuel Hall:
"Eight acres of planting ground, by an act of the Towne as in the old book
Anno 1636, lying near the highway going to Labour in vaine meadowe, butting
to ye East upon ye planting ground of John Seaborn and on ye North planting
ground of Francis Pebody."
1636-In Ipswich, Ma-Under the date February 13, 1636, the entry in the Town
Record occurs, "Granted to John Severance, a six acre planting lot on the
far side the Brooke, and on this side Appletons farm."I happened to find last fall:
In a book entitled Lechfords Manuscript Note-book which is a book that was
kept by a lawyer in very early Boston. He did a lot of legal work for the
folks in the area and kept notes.There is one about Samuel Appleton of Ipswich where he is writing a lease
and
appointing several folks as his attorneys in regard to land in Monkes Elye
in the County of Suffolk.
His attorneys were Isaack Appleton ar., Jo: Gurdon ar., Dan: Rogers cl., Ri:
Stansby cl.,Ri: Sebborne c., I Ap: ar. de little Waldingfield in Com Suff
and Henry Smith Dr of divinity & Master of Magdalen College in Cambridge