Lawrence residents Dave Greenbaum and Mike Silverman hope to be the first same-sex couple from Kansas to get married legally in California.

The two are planning on obtaining their marriage license at 8:15 a.m. June 17 in San Francisco as a California Supreme Court ruling that legalized gay marriage becomes effective.

Greenbaum, 37, and Silverman, 35, have been together for more than 12 years, and said they plan to wear Kansas University attire.

“We wanted to show that we are proud to be from Kansas, and we hope that our home state one day soon will live up to its founding values and recognize marriage for all its citizens,” Silverman said.

The couple had a Jewish ceremony nine years ago recognizing their relationship. They said they wanted to get married in California to provide legal protections for their relationship and make a statement in favor of equality in Kansas.

In 2005, Kansas voters approved a constitutional amendment banning same-sex marriage.

Greenbaum said he hopes one day that amendment will be repealed.

“We hope when people see the deep commitment we’ve made to each other, they’ll understand why this is an important right and work toward changing the laws throughout this country,” he said.

Silverman is a software quality assurance engineer and Greenbaum owns a computer support business.