Children: Anna Croydon (daughter, with Nell), Susan Croydon (daughter, with Nell), Nelson Curtis (stepson, via Grace), Daniel Curtis (stepson, via Grace)
Grandchildren: Samuel 'Sam' Thomas Croydon (via Anna), Daisy Allcroft (via Anna)
Thomas 'Tom' Croydon appeared in the first episode of Blue Heelers, as Sergeant of Mt. Thomas Police Station, and soon after was promoted to Senior Sergeant. His rule for 'Country Policing is all about people,' this become the motto of the station and the rest of the officers. Tom continued to appear in all 13 seasons.