Wikipedia
McCauley and MacCauley may refer to:
McCauley and MacCauley are surnames in the English language, that are borne by both males and females. There are several etymological origins for the names: all of which originated as patronyms in several Gaelic languages— Irish and Scottish Gaelic. Although the English-language surnames are ultimately derived from Gaelic patronyms, the English-language surnames, and the modern Gaelic-language forms do not refer to the actual name of the bearer's father. The English-language surnames are generally popular in certain parts of Ireland—both in the Republic of Ireland and Northern Ireland. According to census records in the United States of America, "MCCAULEY" (McCauley) is a somewhat common surname, although "MACCAULEY" (MacCauley) is extremely rare.