Melissa Gilbert is engaged, and she’s keeping it in the TV-star family: The groom-to-be is Timothy Busfield, formerly of “thirtysomething” and “The West Wing.”

“They got engaged over the holidays,” a source told Us Weekly magazine.

“They’ve known each other for quite some time, as their paths have crossed off-and-on over the past 20 years.”

Both Melissa and Timothy have been married twice before.

Melissa has two sons from previous relationships: Dakota, 23, and Michael, 17.