Centre-back Baldwin started his career at Forest Green Rovers, earning a professional contract due to his impressive displays in the youth set-up.
He moved on loan to Bath City at the beginning of the 2015/16 season, where he made twenty appearances, before moving to Bristol City for an undisclosed fee in January of last year.
Baldwin (pictured) joined Weston on loan last October, making his debut in a 5-1 defeat to East Thurrock United, and he made twenty-six starts for the Seagulls, making three appearances off the bench and scoring 2 goals during his time at the Woodspring.
Harper is able to play down the right-hand side, and has been a part of City’s academy for many years since his early teens.
He joined the City first-team for their pre-season training camp in Portugal during the 2015 pre-season, playing in a 1-1 draw against Braga.
Harper is yet to experience regular and competitive first-team football, so his move to Weston could be a huge step in his development.
Weston`s head coach Marc McGregor told the club`s official website: “I am delighted to have two youngsters who can help our drive forward in the coming season. Aden is well known to supporters and I know they will welcome him back, Ashley is new to the Club but again I am sure the supporters will welcome him into the club”.