The crystal structures of sparteinium tetrachlorocuprate monohydrate $[(C_{15}H_{28}N_2)CuCl_4{cdot}H_2O]$, 1 and sparteinium tetrabromocuprate monohydrate $[(C_{15}H_{28}N_2)CBr_4{cdot}H_2O]$, 2, were determined. The structures of 1 [orthorhombic, $P2_12_12_1$, a = 8.3080(10) ${AA}$, b = 14.6797(19) ${AA}$ and c = 16.4731(17) ${AA}$], and 2 [orthorhombic, $P2_12_12_1$, a = 8.4769(7) ${AA}$, b = 15.166(3) ${AA}$ and c = 16.679(3) ${AA}$], are composed of a doubly protonated sparteinium cation, $[C_{15}H_{28}N_2]^{2+}$, a discrete $CuX_4^{2-}$ anion $(X=Cl^-;or;Br^-)$, and one water molecule. These monomeric compounds are stabilized through various types of hydrogen bonding interaction in their packing structures. Crystal 2 exhibits weak anti-ferromagnetism (J = -3.24 $cm^{-1}$) as opposed to the magnetically isolated paramagnetism observed for 1. The results of comparative magneto-structural investigations of 1 and 2 suggest that the pathway for the weak anti-ferromagnetic super-exchange in 2 might be through a Cu-Br${cdots}$Br-Cu contact.