The Logan's and their names:

The name of Logan is said to have been taken by it's first bearers from the name of a town or estate in Scotland, in which they be living at the time of the adoption of surnames in Great Britain. It is found on the ancient records in various forms of Logon, Loggon, Logyn, Loghan, Logonne, Loggane, and Logan, of which the last is the most generally accepted form of the name today. It is generally believed that the family of this name was of Scottish origin but a few authorities claim that it was descended from an ancient Celtic tribe. The widespread distribution of the family in Scotland makes the first theory the more probable.
As early as the thirteenth century the name of the members of the Logan family were to be found on the records of England Scotland, and Ireland. Sir Allan Logan and Andrew Logan of Galloway were living in the year 1297. Walter Logan was sheriff of Lanarkshire in 1301. Sir Thurband Logan was also living at this time. In 1329 one Sir Robert Logan was among those who accompanied Sir James Douglas on his pilgrimage to the Holy Land with the hart of Robert the Bruce, which accounts for the use of the heart on the arms of the Logans.
At slightly later dates, families of this name were to be found in Ayershire, Berks, Buckingham and various parts of Scotland. The chief and most ancient line of Scotland was that of the Logans of Restalrig, who were descended from Sir Robert of the year 1329, before mentioned. The branches of Burncastle and Cotfiled, in Scotland, are said to have been descended from this line. The last of the Logans to possess Restaltig was one Robert Logan, who died in the year 1601 and was posthumously accused of treason, tried, and his estate declared forfeit.
It is not definitely known from which of the several illustrious lines of the family in Great Britains the first immigrants to American of the name of Logan were descended, but all of the families of the name are said to trace their descent from a common ancestor of an ancient period. Probably the first of the name in American was Jacob Logan or Logyn, who was at Watertown, MA as early as the year 1642 and possibly before. The records of this emigrant, however, are not complete and his family, if any, are not known.
About 1684 one Alexander Logan came from Scotland in Charlestown, MA. By his wife, Susanna, he was the father of Alexander, John, Jonathan, Ebenezer, Isaac, and possibly others. All of these children of the emigrant Alexander are believed to have had families but the names are not given. One Colonel George Logan emigrated from Scotland to Charleston, SC in the year of 1690. He is said t5o have been a descendant of the Restalrig line of the family, possibly the grandson of the eldest son of the last Baron Logan of that place. Colonel George Logan was the father by his first wife, whose name is not known, of at least two children, George and Helen, but there is believed to have been no issue by his second marriage to the widow of Governor Robert Daniel of South Carolina.
Another early emigrant of the name of Logan was James, said to have descended from a younger son of the last Baron Logan of Restalrig, who came to Pennsylvania with William Penn in the year 1701 and was a close friend and confident of the famous Quaker leader. He married Sarah Reed shortly after his emigration to America and was the father by her of William, Hannah, Sarah and James, of whom the last is said to have died without male issue. William, the oldest son of the emigrant James, had issue by his wife, Helen Emlen, of at least four children, William, Sarah, George, and Charles and possibly others.
About the beginning of the 18th century, two others of the name came to American and finally settled in Virginia. They were the brothers, John and David Logan, who are said by some authorities to have come from Ireland. Of these, the eldest, John, brought his wife, Margaret, by whom he was the father of James, John, Samuel, Robert, Sarah, Mary and Alexander.
James, the oldest son of the emigrant John, married Hannah Irwin and had issue by her of Anna, John, Robert, Alexander, Margaret, Elizabeth, James, Mary, Joseph, Irwin, William and Benjamin.
David, brother of the emigrant John, made his home in Orange County and had by his wife, Jane, six children. General Benjamin, Colonel John, Hugh, Nathaniel, Mary, and Sarah.
General Benjamin, eldest son of the emigrant, David……William, John, Benjamin, Jane, Elizabeth, and Ann. John, second son of the emigrant David, married Jane McClure and had Jane, Mary, Theodosia, Elizabeth and David. Hugh, third son of the emigrant David, was the father by his wife, Sarah Wood of Cyrus, Jennie, Nancy, Green, Sarah, Mary, Allen, Harriet, and possibly others.
The descendants of these various branches of the family in American have spread to practically every state of the Union and have aided as much in the growth f the country as their ancestors aided in the founding of the nation. They have been noted for their courage, ambition, industry, energy, integrity, and moral and physical strength, piety, resourcefulness, adventurous spirit, perseverance, and fortitude. Among those Logans who fought as officers in the was of the Revolution were Captain Francis of South Carolina, Captain George of South Carolina, Major Samuel of New York, Captain Samuel of South Carolina, and Ensign Thomas of New York.
Alexander, John, James, Samuel, Robert, George, William, Thomas, Francis, Benjamin and David are some of the Christian names most highly favored by the family for it's male members. A few of the many members of the family have distinguished themselves in more recent times are:  Benjamin Logan of the Virginia line of the family. Kentucky Pioneer 1753-1802  George Logan of Pennsylvania, statesman and philanthropist 1753-1821  Stephen Trigg Logan of Kentucky, jurist 1800-1880  John Alexander Logan of Illinois, soldier and politician 1826-1886  Olive Logan of New York, actress, author and lecturer 1839-1909
On of the variations of the Logan coat-of-arms is described as follows:
Arms="or, three passion-nails sable, conjoined in point, piercing a man's heart in base gules."
Crest - "A buglehorn stringed proper."
Sources: The above data has been compiled chiefly from the following sources.
Burke, Encyclopedia of Heraldry, 1844
Heitman, Officers of the Continental Army, 1914
Savage, Genealogical Dictionary of New England, 1860
Green, Historic Families of Kentucky, 1889
W.L. Fisher, Fisher and Logan Families, 1839
J. Hyslop, The Logans of Knockshinnoch, 1885