The Norman People and Their Existing Descendants in the British Dominions and the United States of America (1874)   Page 146:

    Bacon.   This Norman family, of which the famous Roger Bacon and Francis Bacon, Viscount of St. Albans, the great philosophers, were members, derived its name from that of an ancestor.  We find that name Bacon or Bacco 11th cent. in Maine, but this family was Northman.  Anchetil Bacon before the Conquest made grants at his lordship of Molay to St. Barbe en Auge (Des Bois); William B., Lord of Molay, 1082, founded Holy Trinity, Caen; Richard B. occurs later; and 1154 Roger Bacon (who is mentioned 1154 as of Vieux Molay) held estates in Wilts (Rot. Pip.).  In 1165 Robert, William, and Alexander B. held four knights' fees of ancient enfeoffinent in Essex from the Barony of Montfichet (Lib. Nig.).  The further descent of the English family is well known; of it are the Baronets Bacon.

Extinct and Dormant Baronetage
by Burke and Burke (1841)   Page 31:

BACON OF GILLINGHAM

Lineage

SIR NICHOLAS BACON, of Redgrave, eldest son of the Lord Keeper [father of FRANCIS BACON] was the first person advanced to the dignity of a BARONET on the institution of the order by JAMES I, in 1611.  He m. Anne, only daughter and heir of Edmund Butts, esq. of Thornage, in Norfolk, by Anne his wife, daughter and co-heir of Henry Buers, esq. of Barrow, in Suffolk, and had issue,

1. EDMUND (Sir), who s. his father as second baronet of Redgrave, but d.s.p.  in 1649.
2. ROBERT (Sir), whose male line terminated with SIR EDMUND BACON, the sixth baronet of Redgrave. 
3. BACHEVELL, of Hockham, in Norfolk, who left three daughters his co-heirs, viz.
   • Mary, m. to Sir Robert Baldock, knt. one of the judges of the Common Pleas.
   • Philippa, m. to Robert Keddington, esq.
   • Anne, m. to Nicholas Rookwood, esq.
4. BUTTS, ancestor of the present SIR EDMUND BACON, bart. of Redgrave and Mildenhall.  (See BURKE's  Peerage and Baronetage.)
5. NICHOLAS, of whom presently.
6. NATHANIEL (Sir), of Culford, in Suffolk, K.B. who m. Jane, daughter of Hercules Meautys, esq. and widow of Sir William Cornwallis, by whom he had one son and two daughters, viz.
   • Nicholas, who d. whithout male issue.
   • Anne, m. first, to Sir Thomas Meautys, knt. ; and, secondly, to Sir Harbottle Grimston, bart.
   • Jane, d. uum.

1. Anne, m. to Sir Robert Drury, knt. of Hawsted in Suffolk.
2. Dorothy, m. first, to Sir Bassingbourn Gawdey, knt. of Harling; and secondly, to Philip Colby, esq.
3. Jemima, m. to William Waldegrave, knt. of Smallbridge.

The fifth son,
NICHOLAS BACON, esq. of Gillingham in Norfolk, m. first, adaughter of Sir James Weston, baron of the Exchequer, by whom he had an only daughter, m. to Sir John Rous, bart. of Henham ;  and, secondly, Margaret, daughter of Eustace D'Arcy, esq. of Norwich, by whom he had a son,

1. SIR NICHOLAS BACON, of Gillingham, who was created a BARONET 7th February, 1661 ;  he m. Elizabeth, daughter and heir of Richard Freeston, esq. of Mendham, in Norfolk, and dying about the year 1666, was s. by his eldest son,
2. SIR EDMUND BACON, of Gillingham, at whose decease unmarried, in 1683, the title devolved on his brother,
3. SIR RICHARD BACON, of Gillingham, who m. Anne, daughter of Sir Henry Bacon, bart, of Herringfleet, but sying s.p. in 1685, the BARONETCY became EXTINCT, but the estates passed to his brother-in-law, Sir Henry Bacon, bart. of Herringfleet, direct ancestor of the present SIR EDMUND BACON, bart. of Redgrave.

Arms—Gu. on a chief arg. two mullets sa.

Bacon de Sains

De gueules à cinq fleurs d'aubépine
d'argent percées du champ.
(Rietstap)  cf. Sains-en-Gohelle

Roger Bacon (& son)

De gueules à six fleurs d'aubépine
d'argent boutonnées d'or.
(Armorial Wijnbergen, c.1280)