
Cottrill is a name whose history on English soil dates back to the wave of migration that followed the Norman Conquest of England in 1066. The name Cottrill comes from a serf or bond tenant who held a cottage by service. The name is derived from the Old English cote, which means "shelter," or "cottage."
"In feudal times, 'the coterellus held in absolute villenage and had his person and goods disposed at the pleasure of the Lord.' Kennet's Paroch. Antiq. He was probably so called, like the Cotmanni, or Cottarii of Domesd. from residing in a cottage. Another origin may be from the cotarelli, costeraux, cotemux, mercenary soldiers and freebooters whose trade was war and pillage, (Conf. Brabazon) and who were so called from the coterel, a large knife they carried. Cotgrave defines cotereaux as 'a certaine crue of peasantly outlawes who in old time did much mischiefe unto the nobilitie and clergie.' "
Norman surnames are characterized by a multitude of spelling variations. The frequent changes in surnames are largely due to the fact that the Old and Middle English languages lacked definite spelling rules. The introduction of Norman French to England, as well as the official court languages of Latin and French, also had pronounced influences on the spelling of surnames. Since medieval scribes and church officials recorded names as they sounded, rather than adhering to any specific spelling rules, it was common to find the same individual referred to with different spellings. The name has been spelled Cattrall, Cotterell, Cotterel, Cotteral, Cotteril, Cotterill, Cottral, Cottrall, Cottrell, Cottrel, Coterall, Coterel, Coteril, Coterill, Cotrall, Cotrell, Cottrell, Cottrle, Cotral, Cotraul, Cotrelly and many more.