Splitting Heirs (1993)

A wealthy English aristocrat dies believing an American businessman is his long-lost son, destined to inherit his estate and company. However, an Englishman believes *he* is the rightful heir, mistakenly thinking he has Native American ancestry. This sets off a series of misunderstandings, desires, and rivalries as the two men compete for control of the inheritance. Their complicated relationship intensifies, further complicated by a captivating woman who becomes the object of their affections.