There are 5 ROBBs listed in my
Franklin Co, NebraksaMarriage book:

Dora A. ROBB, m. Elmer E. WESTON on 14 AUG 1884 in Bloomington
Harold W. ROBB m. Mildred L. WILLIAMS on 18 DEC 1927 in Franklin
Leland E. ROBB m. Margaret M. STUEHM on 25 OCT 1928 in Hildreth
Leo W. ROBB m. Frances E. OSTERBLAD on 15 MAY 1935 in Franklin
William B.F. ROBB m. Mattie A.V. BYERLY on 01 OCT 1882 no place listed.

In my Greenwood Cemetery book there is listed one ROBB:
Infant, ROBB, no dates. Stone markings are "Infant of J.W."