WASHINGTON — A lawyer for the pornographic film actress Stephanie Clifford said on Monday that she and her husband had decided to end their marriage, days after Ms. Clifford, who goes by the stage name Stormy Daniels, was mistakenly arrested at an Ohio strip club.

Ms. Clifford’s husband, Glendon Crain, also a pornographic film actor, filed a divorce petition last week in a State District Court in Texas, seeking child support and custody of the couple’s 7-year-old daughter.

Mr. Crain and Ms. Clifford, who gained national prominence after alleging she had an affair with President Trump before he took office, were married in 2015.

The gossip website TMZ reported that Mr. Crain had accused Ms. Clifford of adultery and had successfully sought a restraining order against her.