Barrow have signed striker Andy Cook for a second time, and also brought in forwards Anthony Wilson and Izak Reid.
Cook, 23, was twice loaned to the Bluebirds from Carlisle before joining permanently and scoring 18 times in 60 Conference Premier games.
He was released by Grimsby in June - the club he left Barrow for in 2012.
Wilson, 25, joins Barrow for an undisclosed fee from Conference North rivals North Ferriby, while 23-year-old Reid arrives from Brackley Town.
The winger has previously had spells with Macclesfield and Morecambe.
All three players have agreed two-year contracts, and follow centre-half Danny Livesey and into Holker Street since Paul Casson completed his takeover.