The roots of the surname Cottier are not quite clear, the French Nobles of
Provence have used this name since early times ( more info soon).
It is believed that the Swiss Cottiers are derived from this French origin.
However there is a certain confusion over the derivation of the Manx name
Cotttier the following excerpt explains well the possible route of the name
in the Isle of Mann
COTTIER and COTTER (pronounced COTCHIER), contracted
from MacOttarr, 'Ottar's son.' The Norse name, OTTARR, seems to be formed
from Otta 'twilight,' and the ending hari, which probably means 'sword.' In
Anglo-Saxon spelling it is OHTHERE. The voyages of a Norseman so named are
related in King Alfred's Anglo-Saxon version of Orosius. At Kirk Braddan there
is a cross read by Dr. Vigfusson as follows:-UTR : RISTI : CRUS ÞONO
: AFT : FROCA 'Odd raised this cross to the memory of Froca .' and he remarks
'Ut probably represents the Icelandic Odd, though this is not certain.'* Under
A.D. 1098, we find in the Chronicon Manniae, that "A battle was fought
between the Manxmen at Santwat, and those of the North obtained the victory.
In this engagement were slain the Earl OTHER and Macmaras, leaders of the
respective parties."+
'MACOTTIR, one of the people of Insi Gall (the Hebrides),
A.D. 1142,¤
OTTAR was king of Dublin, A.D. 1147.
OTTARR is common in the Flateyjarbóc.
COTTER is the usual form till the middle of the eighteenth century, when it
was generally supplanted by COTTIER, which is now almost invariably the form
used. Tradition has it that two Hugenot families called COTTIER escaped from
France at the time of the massacre of St. Bartholemew, 1572, and that their
descendants settled in Lezayre. The name COTTIER, however, or rather MACCOTTIER,
was found here before that date, but still it is possible that its origin
may not be the same as that of COTTER.
OTER, OTHER [1098], MACOTT' (?) [1417], MACCOTTER and
MACCOTTIER [1504], COTTIER [1616], COTTER [1625], COTTAR [1647].
Lezayre (vc), Ballaugh, Marown, Braddan, Maughold, Rushen,
Onchan, Malew, Arbory, German, Santon, Bride, Michael (c), elsewhere (u).
* Manx Note Book, No. 9, p. 16.
+ Chronicon Manniae, Manx Society, Vol. XXII, p. 58.
¤ Four Mast., Vol. ll., p. 169.
[FPC however in Historical Manuscripts Commission printed
volume of the Collection of MSS of Dean and Chapter of Wells (vol ii) is following:
Account of Edmund Archer STP, 1726-7 payments "2s
6d to Dennis Cotar and seven other Frenchmen of the Mermaid, cast away on
the Isle of Man"]