How many Anglo-Saxons came over?
The assumption must be that consecutive
Anglo-Saxon generations had plenty of time to integrate themselves into
the local population. As mentioned, they came initially as
'mercenaries', in fact: professional soldiers, so it would be logical
that they learned quickly the language of their masters. Young soldiers
also are likely to marry local girls. Later, after allegedly taking
over power, it would be commonsense that the knowledge of the local
language would help them to maintain that power.
As the new arrivals represented less than 0,50% of the population, they
had no time to teach their language to the 99.50% others. More over,
there were little or no schools. Imposing their language risked also to
upset the local population. Trouble with a local population is always
the last thing a professional soldier wants.
You don't need to know the local language when
you conquer a country. Maintaining power locally however requires a
good knowledge of the local language. It's all about gathering
information, detecting a possible insurgence.
Rome had the standard policy to relay heavily upon the local
authorities to maintain its power locally. Those authorities were left
in place after the conquest and if necessary, their power was even
enforced. In return, Rome demanded from the local upper-class absolute
loyalty. If a rebellion occurred, it were always the leaders of that
rebellion who were severely punished. This policy allowed the Romans to
maintain very little occupation forces. The group of people that had to
be watched was indeed very small.
The Romans never replaced the local upper-class by their own.
Suppose that the Anglo-Saxons would have replaced the British
upper-class. This would have cost them an immense military effort. In
fact, a bigger effort than the Romans themselves were able to perform.
Let alone that the Anglo-Saxons were able to impose their language op
top of that.
Most Anglo-Saxons must have been young and eager
warriors, so one can imagine the impact upon the local girls. The Roman
historian Tacitus already mentioned in 98 AD (“Germania”) as a
curiosity, that the Germans had a great respect for their women.
Who
believes
then
that the local women were forced to speak the tongue
of their lovers? Logically, the Anglo-Saxons would have sought some
allies locally, and the local women and their family (soon to be in
law) must have been the obvious choice. This means that it would be the
alleged invaders who had to learn the local language.
The eventual emerging new families were in
reality very (east-)British all but in name.
The Anglo-Saxons needed quite some time to
conquer the whole of (modern) England. More than 150 years. This
contrasts with the swift conquests by the Romans earlier, and by the
Normans later. The reality was that the Anglo-Saxons themselves did not
conquer England and certainly not Welsh West England. Their British
lords (=rich landowners) had this ambition. Those lords wanted to
consolidate their authority at home first, and then start an expansion
to the Welsh west. All this with the help of Anglo-Saxons. As soon as
the lords had integrated some high ranking Anglo-Saxon officers within
their families, they took over the label "Anglo-Saxon", "Saxon",
"Angles" or similar.
The limited quantity of Anglo-Saxons soldiers is the main reason for
the very slow expansion towards West England. One can estimate
that at no given moment the number of native, German, Anglo-Saxon
warriors exceeded 3000 men. Maintaining power with a such a
small quantity of warriors is not easy. Luckily, England was much
divided. This division was the result of the increased power of the
local lords thanks to the hiring of Anglo-Saxon soldiers. The
'Anglo-Saxon' kingdoms could only expand their power after the local
mentality had changed in favour of the 'German' mentality (= duty,
loyalty, respect for authority).
The Anglo-Saxons never had the ambition to impose their language upon
the local population. This was not their task. The gain was very
limited, the risk to upset the locals great. Their task was maintain
'law and order', read : to uphold the authority and power of their
British masters. The Anglo-Saxons became British housecarls.