The genealogies related to the Maclean family often assert impressive lineages that extend much earlier than documented history. Some claims even suggest a lineage that connects them to notable historical figures such as Julius Caesar. This aspect of ancestry highlights the fascination and sometimes embellishment found in family histories, particularly within noble lineages.

In more stretching claims, some genealogical accounts attempt to link the Macleans to the ancient Celtic god of the sun. Such assertions emphasize not only the cultural heritage but also the tendency for families to create grand narratives about their origins, merging history with mythology to enhance their identity.