Mortimore History, Family Crest & Coats of Arms
We must look to France for the early origins of the name Mortimore. For it is here that early records this family descends from Walter, Lord of St. Martin, Normandy who married a niece of the Duchess Gunnora c. 980. Roger, Sire de Mortimer was a leader of the army of Duke William and helped defeat the French in 1054. 
His son Roger de Mortimer was a leader at the Battle of Hastings and was granted a great barony for his efforts. From him, descended the Lords Mortimer of Wigmore, Earls of March.
Very few entries in the Domesday Book of 1086 include a full name; this name is one of those exceptions. For there, we find Ralph de Mortemer, de Mortuo Mari.  
The etymology of the name, however, is a reference to the family's place of residence prior to the Norman Conquest of England in 1066, Moretemer, in the Seine-Maritime region of Normandy  where Mortemer derives from the Old French "mort," meaning "dead," and "mer," meaning "sea."
Early Origins of the Mortimore family
The surname Mortimore was first found in Herefordshire where Ranulph de Mortimer (before 1070), who accompanied William the Conqueror was granted Wigmore Castle. The family became the Lords of Wigmore. The Hundredorum Rolls of 1273 revealed the following entries: Ralph de Mortimer in Lincolnshire; and Hugh de Mortuomari, and Lucia de Mortuomari in Herefordshire.  "The parish [of Woodham-Mortimer], called in some documents Little Woodham, derives its present adjunct from the family of Mortimer, to whom it anciently belonged." 
Peter Mortemer held lands in Sussex according to the Subsidy Rolls of 1296. 
Some of the family held a family seat at Attleburgh in Norfolk in ancient times. "It was anciently the capital of Norfolk, and the residence of Offa and Edmund, kings of East Anglia; and was subsequently the seat of the Mortimer family, the site of whose baronial hall is still encompassed by a moat. In the reign of Richard II., Robert de Mortimer founded a collegiate establishment, in the church of the Holy Cross, for a warden and four secular priests." 
Some moved up to Scotland. "The first of the name recorded in Scotland is probably William de Mortimer who sometime after 1165 witnessed King William the Lion's confirmation of the charter of Philip de Euermel to Neubotel." 
Early History of the Mortimore family
This web page shows only a small excerpt of our Mortimore research. Another 192 words (14 lines of text) covering the years 1328, 1827, 1287, 1330, 1321, 1324, 1328, 1360, 1352, 1381, 1374, 1398, 1376, 1409, 1390 and 1411 are included under the topic Early Mortimore History in all our PDF Extended History products and printed products wherever possible.
Mortimore Spelling Variations
Before the advent of the printing press and the first dictionaries, the English language was not standardized. Sound was what guided spelling in the Middle Ages, so one person's name was often recorded under several variations during a single lifetime. Spelling variations were common, even among the names of the most literate people. Known variations of the Mortimore family name include Mortimer, Mortimor and others.
Early Notables of the Mortimore family (pre 1700)
Outstanding amongst the family at this time was Roger Mortimer, 1st Earl of March (c.1287-1330), an English nobleman in the Welsh marches, who surrendered to Edward II in 1321, and escaped from the Tower of London in 1324; and his son, Sir Roger de Mortimer, 2nd Earl of March, 4th Baron Mortimer, KG (1328-1360), an English nobleman and military commander during the Hundred Years' War; and his son, Edmund de Mortimer, 3rd Earl of March and jure uxoris Earl of Ulster (1352-1381); and his son, and Roger de Mortimer...
To escape the political and religious chaos of this era, thousands of English families began to migrate to the New World in search of land and freedom from religious and political persecution. The passage was expensive and the ships were dark, crowded, and unsafe; however, those who made the voyage safely were encountered opportunities that were not available to them in their homeland. Many of the families that reached the New World at this time went on to make important contributions to the emerging nations of the United States and Canada. Research into various historical records has revealed some of first members of the Mortimore family to immigrate North America:
Mortimore Settlers in United States in the 17th Century
Mortimore Settlers in United States in the 18th Century
Mortimore Settlers in United States in the 19th Century
Mortimore Settlers in United States in the 20th Century
Some of the first settlers of this family name were:
Mortimore Settlers in Canada in the 19th Century
Emigration to New Zealand followed in the footsteps of the European explorers, such as Captain Cook (1769-70): first came sealers, whalers, missionaries, and traders. By 1838, the British New Zealand Company had begun buying land from the Maori tribes, and selling it to settlers, and, after the Treaty of Waitangi in 1840, many British families set out on the arduous six month journey from Britain to Aotearoa to start a new life. Early immigrants include:
Mortimore Settlers in New Zealand in the 19th Century
The British first settled the British West Indies around 1604. They made many attempts but failed in some to establish settlements on the Islands including Saint Lucia and Grenada. By 1627 they had managed to establish settlements on St. Kitts (St. Christopher) and Barbados, but by 1641 the Spanish had moved in and destroyed some of these including those at Providence Island. The British continued to expand the settlements including setting the First Federation in the British West Indies by 1674; some of the islands include Barbados, Bermuda, Cayman Island, Turks and Caicos, Jamaica and Belize then known as British Honduras. By the 1960's many of the islands became independent after the West Indies Federation which existed from 1958 to 1962 failed due to internal political conflicts. After this a number of Eastern Caribbean islands formed a free association. 
Mortimore Settlers in West Indies in the 18th Century