the NSDAR Roll of Honor, Vol 30, p 379 or 148, shows Mrs Emma Louise JIMMERSON, DAR ID # 29402, descended from Louisa A DANN, dau of John DANN & Eliza CLASON, children [but see below!] of Squire DANN & Rachel LOCKWOOD his wife, or Nathaniel CLASON & Lucretia A FERRIS his wife.Nathaniel CLASON has a pension record; so does Squire DANN 1754-1839, a private in the CT line.
On the same page of DAR Roll is DAR ID 18121, Mrs Mary C FRANKLIN, who claims descent from Sarah DAN, dau of Squire DAN [1755-1839] and Rhoda DAN his wife.go figger.
www.primenet.com/~dlytton/wdc/z0000132.html [Sandra DUNCAN] posted in Jan 1998 shows Francis DAN b c1659 Barbados Islands, d 19 Mar 1723 Stamford CT, m Eliz CLASON 1666-?>1749, but says he is son of a John DAN c1615-20, d Jul 1678, and his wife Mary ---. This item has a dozen pages of descendants of Francis & Elizabeth, including son John, g-son Nathaniel, & gg-son Squire DAN 1755-1839, and [7 pages later!] ggg-son John 1788-1844, m Elizabeth CLASON 1795-, then lists John's children and grandchildren.
The book Westchester Patriarchs says Elizabeth is daughter of Stephen CLASON of Stamford, and says that Stephen named her in his will.There is additional information about Francis & Eliz and their kids, land and service in this book.
The DANN & Montgomery Chronicles, by Harvey Montgomery DANN, begins with Francis and Elizabeth, and claims she is daughter of Stephen CLASON and Elizabeth PERIMENT.The book has 60 pages of DANNS, and is a good read, although short on documentation.
The book Stephen Clason of Stamford Conn in 1654  by Wm B LAPHAM shows his dau Elizabeth, m Francis DAN.also shows a number of DAN/CLASON marriages and descendants, including Elizabeth7 (Nathaniel6, Samuel5, Stephen4,3, Jonathan2, Stephen1), m 1816 John DANN, res Stamford, 8 children listed, no dates.