Splitting Heirs

Splitting Heirs is a 1993 British film starring Eric Idle, Rick Moranis, Barbara Hershey, Catherine ZetaJones, John Cleese and Sadie Frost. The film was directed by Robert Young, and features music by Michael Kamen. It was entered in the 1993 Cannes Film Festival.

He is given the job of acting as host to the visiting American representative of the firm, Henry Bullock Rick Moranis, who turns out to be the son of the head of the firm, the present Duke they become friends, and the friendship survives Henrys becoming the new Duke when his father dies. Circumstantial evidence shows that the true Bournemouth heir is actually Tommy, we see a series of family portraits each of which captures something of Tommys facial characteristics, and his Indian mother tells him the story of his adoption. He consults the lawyer who dealt with his adoption, Raoul P. Shadgrind John Cleese, who says Tommy has no hope of proving his claim, but plants the idea of him obtaining his rightful place in the family by getting Henry out of the way Shadgrind himself then engineers a variety of accidents in the belief that he will share in the spoils as Tommys partner. The delightfully complicated love interest comes with Tommys and Henrys shared at the same time lover, later the new Duchess Catherine ZetaJones and their shared at different times mother, the dowager Duchess Barbara Hershey. As befits a classic comedy of errors, the final resolution of everyones doubts and misconceptions leaves everyone living happily ever after well, for a bit, at least...The film has been released on VHS in the United States and Britain. A RegionDVD has been released in the United States, and a Nordic edition RegionDVD was released in 2010. ........

Source: Wikipedia