Hi. I live in Jacksonville, Florida, USA. My family can only trace back for sure to a William Eastlake, who was younger brother to the artist Sir Charles Loch Eastlake (Britannica). As to his origin, I spoke with a David Eastlake in England, who shared that common ancestor (also Lady Elizabeth Eastlake, a noted early photographer), and his family traces back to roots which are actually in Abergavenny, Gwent, Wales. I have also spoken with Eastlakes here in the States that trace back to ancestors in Scotland. Much wisdom asserts that Eastlake is an Anglicized celtic name. Here in the States, I have found a woman who is in contact with many Eastlakes, Eastlicks, and Eastlacks, who all apparently are really the same extended family. My father has 5 brothers and a sister, so there are lots of Eastlakes in my immediate family, living all over the place. Another Eastlake you might find actually documented is my great-great-grandfather, George Washington Eastlake, who was a Union (North) Cavalry officer in the American civil war. In fact I have his rifle and saber.
Welcome comments and if you are interested in the newsletter this Leslie (married to an Eastlick, I think) puts out, contact me and I'll find her email address.