Entry for Samuel son of John Powell and Jane Docwra, from Thepeerage.com:
Samuel Powell1
M, #552637, b. 1624, d. 1686
Last Edited=14 Nov 2013
Samuel Powell was born in 1624 at Hamburg, Germany.1 He was the son of John Powell and Jane Docwra.2,1 He married Elizabeth (?).1 He died in 1686.1
In 1628 he was naturalised in England.1 He lived at Stanedge, Radnorshire, Wales.1
Child of Samuel Powell and Elizabeth (?)
Samuel Powell+2 d. Sep 1700
Citations
[S37] BP2003 volume 3, page 3196. See link for full details for this source. Hereinafter cited as. [S37]
[S37] BP2003. [S37]
Admittedly, Thepeerage.com isn't all that reliable, but in this case I don't think it's likely to be that far wrong.
So obviously Samuel Powell son of John Powell and Jane Docwra can't be the same Samuel Powell who was born c. 1615 and went and settled in Northampton County, VA!
We have a stray bit of tree out there that a duplicate Samuel Powell of Northampton County has erroneously gotten attached to. He's supposed to be Samuel Powell of Germany and Wales.
Link to the stray bit of tree: Samuel Powell
He should be born 1624 in Germany, married someone named Elizabeth, not Ann, and had a son Samuel who married Elizabeth Folliott, and they all lived in Radnorshire, Wales. http://thepeerage.com/p55264.htm#i552639