Google co-founder and billionaire Sergey Brin has married entrepreneur Nicole Shanahan, Page Six has learned.

The pair wed “a while ago” after a two-year romance and are parents to a baby girl, born late last year, we are told.

Brainy brunette Shanahan, 34, is a lawyer and founder of tech firm ClearAccessIP, while Brin is president of Alphabet Inc. Her wedding with Brin, 46, was low-key, and few outside their close circle knew about it until she spoke out this week about her challenges with fertility options

At the Buck Institute for Research on Aging in Novato, Calif., Monday, Shanahan announced a $7.4 million partnership between the institute and her Bia-Echo Foundation.

Speaking to guests at the launch of the Center for Female Reproductive Longevity and Equality, Shanahan said: “Ten percent of women are infertile by the time they turn 35, and just five years later, at the age of 40, a woman has only a 5 percent chance of becoming pregnant . . . I committed myself to help future generations of women have more choices.”

The center was founded last year with $6 million from Shanahan and the Sergey Brin Family Foundation. This week’s new funding will provide research grants.

Shanahan spoke emotionally about how she nearly gave up all hope of becoming a mother. “Like many women who are not quite ready to start a family in their early 30s, I decided, or so I thought at the time, to take matters into my own hands and freeze embryos. However, after three failed attempts at embryo-making and three dozen visits to in vitro fertilization clinics around the Bay Area, I learned that I was not nearly as unshakable as I thought I was.”

Pregnant women in their mid-30s are classed by the medical community as “geriatric mothers.” Shanahan added: “Personally, I find it crazy that my reproductive organs are considered geriatric long before any other organ even begins to show the slightest sign of decline.”