Eastbrook Family History
Eastbrook Name Meaning
from any of various minor places called Eastbrook for example in Dagenham (Essex) Taunton (Somerset) and elsewhere or a topographic name for someone who lived ‘to the east of the brook’ or ‘by the eastern brook’ or in Sussex ‘by (a locality situated) east of the brook’. Compare Easterbrook and for the Sussex formation see Easton (2).
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016