found: Work cat.: Jan Bos family, 1819-1978, c1979.
found: Cent. pop. growth.
found: Am. fam. names.
found: Ancestors and descendants of James Monroe Boase (1855-1934) of Erath County, Texas, 1991:p. 1 (Boase ancestors may have emigrated to the U.S. from Ireland, but "it is almost certain that my Boases did migrate from somewhere in the British Isles, for several sources show that people with this surname lived in England")
found: Dictionary of American family names, 2006:Boase (Indian: variant of Bose) Bose (German and English: from a Germanic personal name, Boso)