Theodorus Justinus Rheen, Portrait of the grandchildren of Adriaen van der Werff (1659-1722): Margaretha Maria (1719-1784) and Adriana Martina (1721-1763) with their brother Adriaan (1723-?), group portrait portrait painting material linen oil painting, Standing rectangular portrait of three children two girls and boy representing Margaretha Maria Adriaan and Adriana Martina Brouwer grandchildren of Adriaen van der Werff children of Maria van der Werff and Adriaen Brouwer Front of canvas on outer edge of penning: IWCPRSRI.ARCIII. & .EL..I.C. & M.D.C.V.S: M.R.X.M.D.I.R. or I.W.C.P.R.S.R.I..R.G.M.I. & E.L.R.I.C. & M.D.C.V.S.M.R.X.M.V.I.R Adriaen van der Werff Johan Willem of the Palatinate award Margaretha Maria Brouwer Adriaan Brouwer Adriana Martina Brouwer grandchild.