Is a common law marriage valid in a state that does not recognize common law marriages?

In Sullivan v. American Bridge Company, 115 Pa.Super. 536, 176 A. 24 (1935), a couple had exchanged marriage vows in a state that did not recognize common-law marriages while under the impression that in using the words they did use they were entering into a valid marriage. Subsequently, the couple moved to Pennsylvania. When the husband died, the widow sought benefits under the workman's compensation act. In objecting to her claim that she was the legal widow of her husband, her husband's employer relied