Magna Carta Sword 7
Coincidence in meaning between “LAG FB” & “FB in GAOL” ensures “LAG FB”, i.e. ensures LAG and BF as admitted courses in OAG/LFB for us. From there “B FLAG pinned by O” is immediate. This is the evidence.
However James came from Scotland, the flag of "GReat EMPire Britain" must contain
not only the Saint Andrew's Cross, but also the Saint George's Cross. Where is the latter? Then we notice that the name
RC=Rosenkreutz=Rose Cross
is the most suitable to stand for “cross gules”.
Let us list unabbreviated names appeared in GEB/RPM, SOW/CRE, and OAG/LFB. With the assumption FB=Francis Bacon, and the exception of names “Ireland”, “the Saint Andrew's Cross”, and “flagpole” which appeared secondarily, they are

where red means already appeared in GEB/RPM, SOW/CRE, or OAG/LFB, and black means supplementary. This list consists of 50 letters and ends with L of GAOL. Of course 50=L.
Here we recall the phrase “Gret RC showld beg LLL”. At this time we notice “the triple L” means 3 interpretations of L, i.e.
[L1] Degree of shift,
[L2] L=50,
[L3] Transformation of I into L to get G from C.