Sarah Palin's son Track divorcing wife

by Cindy Clark, USA TODAY

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Sarah Palin, governor of Alaska, center, poses for a photo with daughters, Piper, center front, Willow, left, Bristol, right, son, Track, back left, and husband Todd, back right, in Juneau, Alaska, U.S., in 2007. (Credit: VIA BLOOMBERG NEWS)

Here's some Palin family news that doesn't involve Sarah or Bristol: the clan's eldest son, Track Palin, 23, and his wife Britt are divorcing after 18 months of marriage, reports E! News.

A dissolution was granted after the couple filed for divorce in Alaska on Dec. 1. They have a 1-year-old daughter, Kyla, but it looks as if there won't be any messy fights a la Bristol and Levi: Track and Britt have already settled all matters related to child support, property and custody.

Track is the eldest of five Palin siblings: Bristol, 22, Willow, 17, Piper, 11, and 2-year-old Trig.