About Paige Mathews' (Halliwell) life: We just met Paige so, much of her life is still a mystery. Here's what we do know:

She was adopted at birth from Sister Agnes. Her birth parents were Patty (mother of The Charmed Ones) and Sam (a Whitelighter). They left Paige in the care of sister Agnes for her safety.

Paige's parents were killed at some point, and this led to her looking for her birth mother. She stopped her quest when she found her real mother had died as well.

Paige has at least one aunt and uncle. We also know that she had a drinking problem at one point.

There will be more as the season progresses, keep watching!