Okay, only two references, thepeerage.com & theweald.org, list Geoffrey (husband of Ann Hoo/Hastings) as the son of Thomas and four references list as the son of Geoffrey & Alice Boleyn, who he is attached to already.
http://en.wikipedia.org/wiki/Geoffrey_Boleyn says
dau. Isabella m. Henry Aucher
http://our-royal-titled-noble-and-commoner-ancestors.com/p513.htm#i... says
dau. Isabella m. William Cheney
dau. Alice m. John Fortescue
http://www.thepeerage.com/p326.htm#i3252 has nothing for Alice or Isabella
http://www.tudorplace.com.ar/BOLEYN.htm#Geoffrey BOLEYN (Lord Mayor of London) has
dau. Elizabeth/Alice m. John Fortescue
dau. isabella m. William Cheney
dau. Alice m. John Clere
'Hundred of South Erpingham: Blickling', An Essay towards a Topographical History of the County of Norfolk: volume 6 (1807), pp. 381-409. URL: http://www.british-history.ac.uk/report.aspx?compid=78270 has
dau. Alice m. Sir John Fortescue, Knt.
dau. Isabel m. William Cheyney
http://www.theweald.org/N10.asp?NId=6000221 has
dau. Alice m. John Clere
dau. Isabel m. William Cheney
The only two places I can find Henry Aucher's wife Alicia/Isabel Boleyn listed with a parent/parents is
http://www.tudorplace.com.ar/BOLEYN.htm#Isabel BOLEYN1
lists Isabel dau. of Geoffrey & Alice Boleyn as wife of Henry Aucher, she would then be sister of Geoffrey who married Anne Hoo
and
http://en.wikipedia.org/wiki/Geoffrey_Boleyn
husband of Ann Hoo, has listed dau. Isabella m. Henry Aucher
This is the only site that lists a dau. Isabel, no others give a Isabel, Alice or Alicia listing for him. Wiki lists that the younger George had siblings mentioning three unknown sisters along with a sister Cecily.
So that is four references to Isabel dau. of Geoffrey & Ann Hoo as being wife of William Cheney
&
one reference to their dau. being wife of Henry Aucher.
Could be then that Alicia wife of Henry Aucher was the dau. of Geoffrey & Alice Boleyn.