Campbell looks to have remarried:
CAMPBELL WALDIE Marriages:Spouse: CHARLOTTE STEWART
Marriage: 17 SEP 1861 Abbey (Paisley), Renfrew, Scotland
Looking at his marriage details confirms that 1810 birth in Edinburgh and parents. Both Campbell and Charlotte are showing as widowed. There is also this birth to parents Campbell Waldie and Charlotte Glendinning (Stewart is certainly her maiden name /Glendinning her previous married name? ):
CAMPBELL WALDIE Birth: 07 AUG 1870 High Church, Paisley, Renfrew, Scotland
It was maybe after the birth of newborn son Campbell that the family (including Frederick?) left Scotland?.
Monica
ADDED:
Possible first marriage for Charlotte:
CHARLOTTE STEWART Marriages:Spouse: THOMAS GLENDINNING
Marriage: 05 AUG 1843 Low Church, Paisley, Renfrew, Scotland