United Kingdom, July 10 -- Melissa Gilbert has discovered she has three elder brothers.

The Little House on the Prairie actress, 62, was adopted at birth and she's been unravelling her family tree in recent years - she's now found three elder brothers on her birth mother's side of the family after previously finding out she had three half-siblings on her dad's side.

In a post on Melissa explained the latest revelations, writing: "For those who don't know, I was adopted at birth. For which I will be eternally grateful.

"Decades ago, I found my birth father's family. Including my three older half siblings. Those relationships were a bit fraught.

"Not very close and still full of secrets. Not what I'd hoped but ultimately an important pa...