There are eight Holbrook lines that were in America prior to 1800. They are listed below with a reference to the geographical location where the line is first found in this country.
| Name | Location | Date |
| Thomas Holbrook (click on name for more information) | of Massachusetts | 1635 |
| John Holbrook | of Massachusetts | pre-1625 |
| Thomas Holbrook | of Maryland | ca. 1666 |
| John Randolph and William Holbrook | of Virginia | ca. 1724 |
| Harmaness Holbrook | of North Carolina | ca. 1685 |
| Joseph Holbrook | of Maryland | ca. 1683 |
| Rev. John Holbrook | of Virginia | ca. 1724 |
| James Holbrook | of Maryland | ca. 1770 |
There are several other Holbrook lines that came over in the 1800's, both from England and from Germany. Only a few descendants have been found of these later lines and because contact has been so limited, they are not included in these brief overviews of each line.
Source: J. C. Halbrook, published June, 1981
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20 March 1636. List of persons bound from Weymouth to New England:: ....Thomas Holbrooke of Somerset, 34; Jane Holbrooke his wife 34; John Holbrooke his son 11; Thomas Holbrooke his son 10; Anne Holbrooke his daughter 5; Elizabeth his daughter 1. |
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30 March 1635. Following passengers shipped in the Marygould, Mr. Edward Cuttance, bound from Weymouth to New England: Thomas Holbrook, his wife and children; .... |
| Source: The Complete Book of Emigrants
1607-1660, by Peter Wilson Coldham. pp 130, 176. Note the 2 entries appear to be for the same family, but the dates are a year apart. |