Abstract.Fernique's recent proof of flniteness of positive moments of the norm of a Banach-valued Gaussian random vector X is used to prove rth mean convergence of reproducing kernel series representations of X. Embedding of the reproducing kernel Hilbert space into the Banach range of X is explicitly given by Bochner integration. This work extends and clarifies work of Kuelbs, Jain and Kallianpur.