When William H. McIlvaine was born in 1839, in Kent, Delaware, United States, his father, McIlroy McIlvain, was 25 and his mother, Elizabeth White Wilson, was 27. He lived in South Murderkill Hundred, Kent, Delaware, United States in 1860. He died on 11 October 1862, at the age of 23, and was buried in Frederica, Kent, Delaware, United States.
Irish (northern) and Scottish: variant of McElwain .
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