On 3 February 1951, Sprigg married Griselda A. Findlay Paterson, daughter of Robert Findlay Paterson and Grace née Dreghorn, born December 1921 in Paisley, Scotland.
ˌɔn θɹˈiː fˈɛbɹuːˌɛɹi nˈaɪntiːnhˈʌndɹɪd fˈɪfti wˈʌn, spɹˈɪɡ mˈæɹid ɡɹˈaɪsldə ˈeɪ. fˈaɪndleɪ pˈæɾɚsən, dˈɔːɾɚɹ ʌv ɹˈɑːbɚt fˈaɪndleɪ pˈæɾɚsən ænd ɡɹˈeɪs nˈeɪ dɹˈɛɡhɔːɹn, bˈɔːɹn dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd twˈɛnti wˈʌn ɪn pˈeɪsli, skˈɑːtlənd.