Yes, I can give a little more info. She was the daughter of Eli Alexander and Tamizon Ford. They were in Cecil Co., MD and she was probably born in the 1730's. Eli was the son of Martin Alexander, who was the son of Samuel Alexander, who was one of the seven sons that came to the US in 1669.
The reason I'm looking into Lydia is because I have a ggggg grandmother named Lydia that married Edward Sams about 1755. I don't know Lydia's maiden name, but there is some sort of connection between the Alexander's and Sams' that we've never been able to figure out. If Lydia Alexander is "my" Lydia, she was born July 12, 1735 and died January 17, 1811 in Hanover Twp., Wasington Co., PA. Her and Edward first appear in Loudon Co., VA on a tax list in 1761. Three of their children were born prior to that. One, Jonas, born in 1758, was born in Maryland. The other two, Hannah and Nathaniel, we don't know where they were born, but Maryland seems a good possibility.
No doubt this is a long shot, but time and place work out, and there's that unexplained Sams-Alexander connection.