Notes for Walter filius Osbert
VCH Lancs, vol 6, pp. 303-313 in the Samlesbury article says Walter had an heir Margaret who married Roger son of Gospatric of Samlesbury. However also in VCH Lancs but in vol 7, pp. 161-165 in the Clifton, Lanc article, they say that Walter filius Osbert de Clifton was succeeded by his son William de Clifton and then by a long succession of Clifton males. So Margaret cannot have been Walter’s heir.
His son William held these lands in chief.
Armorial Blazon notes for Walter filius Osbert
Sable on a bend argent three mullets pierced gules.
Blazon source notes for Walter filius Osbert
VCH Lancaster, Clifton article, Vol 7, pp. 161-165, probably from the Lancs visitation (1567, 1613 and 1665) for some much later Clifton generations.